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Cooler Master Sk-621-Gklr1-US SK621 60% Mechanical Keyboard with Cherry MX Low Profile Switches and Brushed Aluminum Design

Brand: Cooler Master

3.5 162 ratings

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$49.99

In Stock

Brand	Cooler Master
Connectivity Technology	Bluetooth
Keyboard Description	Gaming
Recommended Uses For Product	Travel
Special Feature	Wireless, Bluetooth, Lighting
Color	Gunmetal
Number of Keys	61
Style	60%
Material	Aluminum, Plastic
Hand Orientation	Ambidextrous

About this item

Two Keycap Sets: Slightly contoured and flat set, or go with the traditional keycap profile set for that familiar look and touch
Cherry MX Low Profile Switches: A reduced travel distance and actuation point with the same signature durability and precision
Brushed Aluminum Design: Slim top plate, floating keycaps, and minimalistic, tenkeyless design built with functionality in mind
Keep It Light with LEDs: Keep the lightshow going with per-key backlighting and surrounding lightbars with endless customization
On-the-Fly Controls: Make real-time adjustments to lighting and macros with no software necessary

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From the manufacturer

Cooler Master SK621

main

SK621

Strikingly Sleek

Be the envy of chiclet keyboard fanboys everywhere with the ultra-portable SK621 Wireless 60% Mechanical Keyboard. With flat contoured keycaps and new Cherry MX Low Profile switches in a stripped-down 60% format, you've finally found a portable wireless keyboard that delivers on performance - without sacrificing the clean aesthetics of your slick workstation. And with signature Cooler Master features on deck, you’re fully equipped to crush it both at work and in-game.

Cherry MX Low Profile Mechanical Switches
Portable 60% Keyboard Layout
Wireless Keyboard Capability
On-the-Fly Controls
Customization via Software
Slim, Extra Flat Keycaps

Features


Low Profile Switches A reduced travel distance and actuation point with the same signature durability and precision.	Portable 60% Keyboard Mini, unique and compact design with all of the essentials.	Hybrid Wired & Wireless Up to 3 devices supported with Bluetooth 4.0, or use it wired over a removable Type-C USB and charge the battery simultaneously.	Software Customization Map 16.7 million colors to any key, customize lighting modes, and fine-tune macros.

RGB Backlighting and Lightbar


	SK621	SK630	SK650	SK630 White	SK650 White

Customer Reviews	162	256	651	256	651
Price	$49.99	$34.99	$62.49	$34.99	$62.49
Keyboard Size	60%	Ten-Keyless	Full Size	Ten-Keyless	Full Size
Switch Type	Cherry MX RGB Low Profile Red	Cherry MX RGB Low Profile Red	Cherry MX RGB Low Profile Red	Cherry MX RGB Low Profile Red	Cherry MX RGB Low Profile Red
Material	Aluminum / Plastic	Aluminum / Plastic	Aluminum / Plastic	Aluminum / Plastic	Aluminum / Plastic
LED Color	RGB	RGB	RGB	RGB	RGB
Polling Rate	1000Hz	1000Hz	1000Hz	1000Hz	1000Hz
Connection Type	Bluetooth Wireless & USB Type-C Wired	USB Type-C Wired	USB Type-C Wired	USB Type-C Wired	USB Type-C Wired
32bit ARM Cortex M3	✓	✓	✓	✓	✓
On-board Memory	512KB	512KB	512KB	512KB	512KB
On-The-Fly System	Yes, for Multi-media, Macro Recording and Lighting Control	Yes, for Multi-media, Macro Recording and Lighting Control	Yes, for Multi-media, Macro Recording and Lighting Control	Yes, for Multi-media, Macro Recording and Lighting Control	Yes, for Multi-media, Macro Recording and Lighting Control
Mutli-media Keys	Through Function Key (FN)	Through Function Key (FN)	Through Function Key (FN)	Through Function Key (FN)	Through Function Key (FN)

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	This Item Cooler Master Sk-621-Gklr1-US SK621 60% Mechanical Keyboard with Cherry MX Low Profile Switches and Brushed Aluminum Design	Recommendations Womier Low Profile Keycaps, Shine Through Keycaps, Custom Keyboard Keycaps, Keycaps 75 Percent Full Keycaps for 60% 65% 75% 80% 100% Cherry Gateron MX Switches Mechanical Keyboard, Black Backlight	dummy Logitech MX Mechanical Mini Wireless Illuminated Keyboard, Tactile Quiet Switches, Backlit, Bluetooth, USB-C, macOS, Windows, Linux, iOS, Android, Metal - With Free Adobe Creative Cloud Subscription	dummy Logitech MX Keys Mini Minimalist Wireless Illuminated Keyboard, Compact, Bluetooth, USB-C, for Apple macOS, iOS, Windows, Linux, Android - Graphite - With Free Adobe Creative Cloud Subscription	dummy G.Skill KM250 RGB 65% (67-Key) Mechanical Keyboard, PBT Dual Injection Keycap (Black)	dummy Redragon K621 Horus TKL Wireless RGB Mechanical Keyboard, 5.0 BT/2.4 Ghz/Wired Three Modes 80% Ultra-Thin Low Profile BT Keyboard w/Dedicated Media Control & Linear Red Switches, Black
	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart
Price	$49.99	$20.99	-17% $124.99 List: $149.99	-10% $89.99 List: $99.99	$44.99	$54.99
Delivery	—	Get it as soon as Friday, May 17	Get it as soon as Friday, May 17	Get it as soon as Friday, May 17	Get it as soon as Friday, May 17	Get it as soon as Friday, May 17
Customer Ratings	3.5162	4.1123	4.42,778	4.619,108	4.784	4.1791
For gaming	2.9	4.0	3.6	3.7	4.8	3.8
Ergonomic	—	4.1	4.1	4.5	4.6	4.5
Quality of material	3.8	4.0	4.7	—	4.5	—
Value for money	2.3	4.3	—	—	4.8	3.8
Brightness	—	—	4.3	4.7	4.8	4.3
Sold By	AVGPC	Womier SHOP	The Deal Source CR (SERIAL NUMBERS RECORDED)	Amazon.com	RACERSPEED INC.	Redragon Shop
connectivity tech	Bluetooth	—	HDMI	Bluetooth	USB-C, USB	BT, 2.4Ghz, USB-C
number of keys	61	118	108	104	67	87
hardware interface	—	—	bluetooth	bluetooth	usb	bluetooth
compatible devices	—	Gaming Console, Keyboard	Smartphone	Laptop, PC	keyboard	PC, Laptop, Tablet
keyboard description	Gaming	Gaming	Mechanical	Membrane	Mechanical Gaming	Gaming
operating system	—	—	Windows 10, Windows 11, macOS 10.15, iOS 14, iPadOS 14, Linux, Chrome OS, Android	Windows, Mac OS	—	Win/Mac/Linux/Unix

Product Description

The SK621 is a truly portable keyboard with mechanical switches. The 60 percent format removes the Nav keys and numpad, but still packs all the signature Cooler Master features like on the fly controls and Hybrid key rollover. Cherry MX low profile switches with reduced travel and actuation distance means you get all the precision and durability of a mechanical keyboards, but with the slim stylings of a minimalist, chic let keyboard. Add in a refined brushed aluminum housing and Bluetooth wireless capability, and you have the ultimate on the go mechanical keyboard.

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Product information

Technical Details

Other Technical Details

Brand

‎Cooler Master

Item model number

‎SK-621-GKLR1-US

Item Weight

‎14.9 ounces

Product Dimensions

‎12.48 x 4.72 x 2.36 inches

Item Dimensions LxWxH

‎12.48 x 4.72 x 2.36 inches

Color

‎Gunmetal

Manufacturer

‎Coolermaster

ASIN

‎B07R3CC3HY

Date First Available

‎April 24, 2019

Additional Information

Customer Reviews

3.5 162 ratings

3.5 out of 5 stars

Best Sellers Rank

#6,084 in Computer Keyboards

Warranty & Support

Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.

Product Warranty: For warranty information about this product, please click here

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Customer reviews

3.5 out of 5

162 global ratings

How customer reviews and ratings work

Customers say

Customers like the build quality of the keyboard, saying it's sturdy and made of high-end material. They also appreciate the form factor and the bluetooth connectivity. However, some customers have reported issues with connectivity and performance. They say the keys are close together and hard to find. Customers also have issues with lag, and ease of typing. Opinions are mixed on appearance, comfort, and size.

AI-generated from the text of customer reviews

11 customers mention11 positive0 negative

Customers are satisfied with the build quality of the keyboard. They mention that it is sturdy and made of high-end materials. Some appreciate the form factor.

"...Let's start with the good: the build quality on this thing is fantastic. Some of the best I've ever seen on a keyboard...." Read more

"This is a very attractive keyboard and feels extremely well-constructed. It's hefty and solid.Others have complained about the keycaps...." Read more

"...Overall impressions are the keyboard looks and feels sturdy and high quality, with nice attention to detail...." Read more

"Really solid keyboard; feels great to use, although it takes some getting used to...." Read more

34 customers mention16 positive18 negative

Customers are mixed about the appearance of the keyboard. Some mention it's very attractive and well constructed, with nice chiclet style keys. Others say there are also some layout annoyances, like the tiny right shift button, and awkwardness.

"...All the keys are accessible, however, you may need to press key combinations to get them; for instance, to type the "tilde," you must press the key..." Read more

"...-In bluetooth mode on a mac, my keypresses are sometimes extremely exaggerated ssoooooo ittt tyyyyyyyyyypes liiike thhhiisss...." Read more

"This is a very attractive keyboard and feels extremely well-constructed. It's hefty and solid.Others have complained about the keycaps...." Read more

"...There are also some layout annoyances, like the tiny right shift button, plus a confusingly designed Caps Lock LED which actually indicates that..." Read more

13 customers mention9 positive4 negative

Customers have mixed opinions about the comfort of the keyboard. Some find it nice and satisfying to type on, while others say it's uncomfortable and heavy.

"...This keyboard is not a "clicky" keyboard and is soft to the touch; some may like this, some may hate this...." Read more

"...Most of the keys feel very nice to press but it's difficult to know exactly when the actuate...." Read more

"...Plus, the short throw red switches just feel awful to type on regardless. They are mushy and bleh. No keycap can fix a mediocre switch...." Read more

"...In short, this is a great keyboard that feels really satisfying to type on (despite the learning curve due to its size)...." Read more

7 customers mention4 positive3 negative

Customers are mixed about the size of the keyboard. Some mention that the size is perfect for someone using a desk tray holding a keyboard, while others say that it's almost too small. Some customers also mention that some of the keys are of different size, causing constant errors when entering.

"...The size is perfect for someone using a desk tray holding a keyboard and mouse. However, it has some serious problems:..." Read more

"...YOU WILL NEED TO ADJUST TO THIS KEYBOARD since some of the keys are of different size i.e. the right shift key, the del key to the right of the up..." Read more

"...great quality, the keys feel great. good quality cherry mx. good size, the 60% fits perfect on my cluttered desk. perfect for travel...." Read more

"...Lag is terrible. When hard wired it works fine, nice small size, good build quality, quiet, nice LEDs." Read more

14 customers mention3 positive11 negative

Customers are not satisfied with the performance of the keyboard. They mention that the keys are close together and hard to find. Some of the keys do not line up evenly, and the Windows key does not work. The cap lock does not function properly, and it loses any keystrokes during wake-up and connect. The right shift key is a little small, and so far it does not works perfectly with a Mac in bluetooth mode.

"...My only complaint so far is the keyboard does not work perfectly with a mac in bluetooth mode...." Read more

"...The problem is that the caps are all super close together, and due to the nature of the switch design, you will readily actuate multiple keys at once..." Read more

"It works great, looks great, sounds great....but I kept pushing more than 1 button at a time because they are too close together...." Read more

"...Add to that the primary keys do not line up evenly like a regular keyboard, and you find yourself hitting the wrong keys often if you are a touch..." Read more

13 customers mention0 positive13 negative

Customers are dissatisfied with the connectivity of the keyboard. They mention that the Bluetooth connection is usually disable, unusable, and drops inputs all the time. Some customers also report that the keyboard does not connect to their Windows 10 machine.

"...The bluetooth on this thing sucks...." Read more

"...Input lags *multiple seconds* and the connection drops frequently. Can I plug it in and use it in wired mode? Sure. Should I have to? No...." Read more

"...6 ft away. Bluetooth is garbage at 6 feet away apparently for keyboards even for regular typing, let alone gaming; so much latency...." Read more

"...the lights shut off (even the charging light) and it will no longer connect to bluetooth...." Read more

9 customers mention0 positive9 negative

Customers are dissatisfied with the lag of the keyboard. They mention that it takes several seconds to wake up and connect, and the typing experience is very frustrating.

"...Input lags *multiple seconds* and the connection drops frequently. Can I plug it in and use it in wired mode? Sure. Should I have to? No...." Read more

"...for keyboards even for regular typing, let alone gaming; so much latency...." Read more

"...Once the battery hits 30%, key lag becomes insane, and it will become impossible to type...." Read more

"...this keyboard less than 6 inches away from my laptop and I experience lag stuttering and occasionally a bug where it..." Read more

5 customers mention0 positive5 negative

Customers find the keyboard hard to type on and impossible to type accurately on the default keycaps. They also mention that the keyboard has trouble connecting and keeps repeating letters many times.

"...It is *nearly impossible* to type accurately on the default keycaps...." Read more

"...the battery hits 30%, key lag becomes insane, and it will become impossible to type...." Read more

"...use is wirelessly a few feet away from computer and it kept repeating letters many times as if the bluetooth was cutting out...." Read more

"Won't stay connected to Bluetooth, has trouble connecting, will repeatedly type 26 letters when I've only typed 1, goes non responsive randomly...." Read more

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Top reviews from the United States

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Amazon Customer

Love this Mighty Mini Keyboard! ** Don't expect your traditional keyboard it will disappoint you. **

Reviewed in the United States on May 24, 2019

Verified Purchase

I originally bought this keyboard to use with the iPad Pro but ended up using it for all my devices, including my laptop and desktop. You can switch between devices quickly with simple key combinations. If you are expecting a traditional keyboard then this keyboard may not be for you. YOU WILL NEED TO ADJUST TO THIS KEYBOARD since some of the keys are of different size i.e. the right shift key, the del key to the right of the up arrow. Other than that, it feels like I'm typing on my laptop keyboard except the travel is a tad longer. This keyboard is not a "clicky" keyboard and is soft to the touch; some may like this, some may hate this. All the keys are accessible, however, you may need to press key combinations to get them; for instance, to type the "tilde," you must press the key combination FN+SHIFT+ESC, and for the "tick," you must press FN+ESC. (Not sure yet if you can map to different keys). There are, in fact, dozens of built-in macros: for music control, profile switching, lighting, macro recording, etc. I can't recommend this for everyone unless you're willing to change some habits. Personally, I love all the options and freedom (portability) this keyboard provides. Disclaimer: This review was typed using the SK621.

Very nice keyboard

Reviewed in the United States on May 18, 2019

Verified Purchase

I'm really liking this keyboard so far. I don't find it difficult to type on as some people seem to. There is a small learning curve if you're not used to typing on small keyboards with the keys close together but I don't have trouble finding correct keys or cleanly pressing the key that I'm looking for.

The keycaps are beautiful and I love the design. The preset color patterns are nice and easy to use. Most of the keys feel very nice to press but it's difficult to know exactly when the actuate. The actuation seems to occur near the top of the keypress.

My only complaint so far is the keyboard does not work perfectly with a mac in bluetooth mode. I knew the keyboard's software wouldn't work on OS, but what's frustrating is it doesn't seem to be possible to swap the functionality of the alt and windows key while in bluetooth mode. I bought this keyboard intending to keep it plugged into my PC, while using it with my mac over bluetooth so this kind of ruins the use case I was hoping for. The keys can be swapped just fine with the keyboard is connected to the mac with the wire.

Other notes:
-The ~ key requires a specific keypress sequence of SHIFT, then Fn, then ESC. If you press FN first, you'll get `

-In bluetooth mode on a mac, my keypresses are sometimes extremely exaggerated ssoooooo ittt tyyyyyyyyyypes liiike thhhiisss. It's not very common and lasts for a few minutes when it happens.

-If you want to use this keyboard with a different cord, you'll need one that's skinny around the USB-C end. A bulky grip around the input won't fit.

7 people found this helpful

I should have listened to the reviews

Reviewed in the United States on October 16, 2020

Verified Purchase

Like many of you guys, I thought this would be the perfect keyboard for me, as a very fast laptop typist, so much so that I ignored the hundreds of reviews laying out all the problems with this product. It was a mistake. This is not a good keyboard.

Let's start with the good: the build quality on this thing is fantastic. Some of the best I've ever seen on a keyboard. And it's beautiful to look at, too.

As for typing—it's a nightmare. I had read that there was a problem with the keycaps and that they had fixed them, but I didn't realize that you still needed to special order (for free, although there is no delivery window given and I assume it will take weeks before I get my replacement) the new/better keycaps, and that the boxed version here on Amazon still ships with the original caps. It is *nearly impossible* to type accurately on the default keycaps. I'm someone who can put out 120+ wpm on a laptop keyboard, and nearly as much on a long throw mechanical keyboard. On this thing, after a bunch of practice, I was able to hit 78 without errors. The problem is that the caps are all super close together, and due to the nature of the switch design, you will readily actuate multiple keys at once, so you just end up typing *super* sloppy. Plus, the short throw red switches just feel awful to type on regardless. They are mushy and bleh. No keycap can fix a mediocre switch.

There are also some layout annoyances, like the tiny right shift button, plus a confusingly designed Caps Lock LED which actually indicates that bluetooth is connected (!).

The bluetooth on this thing sucks. It takes 10-15 seconds to connect, compared to my former "unknown Chinese brand" keyboard which would (and still does) connect within a second.

The included software is a nightmare. Good luck actually getting the settings you want to stick, and then attempting to navigate your way through all of the different shortcuts on the keyboard that don't come with any documentation in the box (you have to dig through their website to find it), and even once you know what they do, they don't work half the time anyway. The best part is that as you are changing settings, all sorts of LED sequences on the keyboard light up as if they've some kind of confirmation, but good luck figuring out whatever CM is trying to tell us with these undocumented sequences of lights.

Lastly, the (lack of) angle on the device is bad, especially with the grippy and too-close-together keycaps. It feels like you have to bend your wrist over to properly type in such a fashion as to not constantly double up on keystrokes, which is terrible for your wrist.

2 people found this helpful

Top reviews from other countries

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Adrian L N

Excelente teclado, casi perfecto

Reviewed in Mexico on July 27, 2020

Verified Purchase

El tamaño es perfecto al no tener la sección numérica da mas espacio para el recorrido del museo en la mesa de trabajo.

El sonido de las teclas es silencioso pero suficiente para saber cuando se ha actuado la tecla.
Tiene atajos para activar las funciones de los led y sus efectos sin necesidad del software, aunque el software es muy torpe no es necesario para personalizar el teclado.

La versión que compre viene en ingles pero solo es necesario encontrar la combinación de teclas para escribir Acentos y la letra '''ñ'
- Acentos (' ")+(e)=é
- Letra eñe (shift)+(funcion)+(esc) posterior (n) = ñ

2 people found this helpful

Translate review to English

Fejuz Acosta

el teclado ya no funciona

Reviewed in Mexico on September 24, 2020

Verified Purchase

tengo dos meces con la en teclado y a día de hoy dejo de fusionar, enciende y todo pero no enciende el led de bluetooth y por obvio no conecta a ningún dispositivo ni a la pc y cuando la conecto directo al pc no lo detecta solo enciende, me gustaría que puedan tener cuidado y que la empresa me contacte por que no estoy cómodo con mi compra :(

Translate review to English

Victor Hugo Olmos

Compacto

Reviewed in Mexico on October 17, 2020

Verified Purchase

Compacto y comodo de usar

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Jane

Okay keyboard, garbage software and support

Reviewed in Canada on September 15, 2020

Verified Purchase

tl;dr
pretty keyboard and okay if used wired, but absolutely garbage support/software/Bluetooth

I've been using this keyboard for 2 months now (after some serious troubleshooting). Prior to purchase, I had already read all the terrible reviews around the internet and prepared for the worst but I still managed to be shocked at how bad the overall experience was for this overpriced keyboard. The keyboard itself has decently sized albeit weirdly flat keys, but I can't seem to get used to the small right shift key and always seem to accidentally hit the somewhat large capslock key. I've also seen mention of not being able to access the tilde (~) key but you can do that by pressing Shift + Fn + ` in that order. RGB backlighting and customization is actually nice IF you can get the software working.

Problem #1: After downloading and launching the Cooler Master Portal v1.01 software, it will tell you that it's not connected to the internet. To fix that, it has nothing to do with internet. You will need to turn off the keyboard and plug it in a USB port before launching the Portal again to get the software to work.

Problem #2: I recently got a whole new build with a 10th gen motherboard that has onboard Bluetooth 5.0, and no matter what I do, the keyboard refuses to connect to the computer. Literally every other Bluetooth device is fine, it's just this keyboard that constantly tells me to try again (never found a solution to this, but more on my workaround later).

Problem #3: I created a support ticket on Cooler Master's site about this Bluetooth issue and they replied after a week or so telling me to install their Portal software and update my firmware (which I had already done). I replied that I had already tried that, amongst other possible common solutions to no avail, after which I was ghosted for a good 2 weeks before they replied with a "Do you have other Bluetooth devices? Do they work?". This information was already included in initial ticket. The absolute lack of support from their customer support the final straw that prompted me to write this review.

Now for my Bluetooth workaround. While being ghosted by support, I had searched forums for answers and saw someone who managed to get it working by buying a Bluetooth 4.0 dongle so I purchased one. In order to finally get this keyboard to connect through Bluetooth, I had to plug in the dongle and disable all of my Bluetooth drivers except Low Energy Bluetooth drivers.

For this price, it's ridiculous how unintuitive their software is, how useless their support is, and how I have to buy extra parts in order for the keyboard to work as intended wirelessly.

5 people found this helpful

Nicolas Roy

Excellent premier clavier méchanique

Reviewed in Canada on April 1, 2020

Verified Purchase

Avant de commencer, je voudrais vous dire de faire la mise à jour du firmware du clavier avant de le retourner, ça a régler tous les problèmes que j'ai rencontrer depuis que j'ai ce clavier.

Pour poursuivre, dans les derniers jours j'ai envisager de le retourner car il avait un problème en particulier qui me dérangeait. Je suis je genre de personne qui utilise le clavier sur ses cuisses , je trouve que les bureaux sont trop haut pour le mettre dessus. (j'allonge mes jambes sur un repose pied quand je suis sur mon ordinateur) et donc je suis à environ un mètre et demis des antennes. Au départ, je trouvais étrange qu'il y ai une perte de signal. J'ai donc chercher le moyen de vérifier le firmware du clavier (le programme de cooler master est portal) Je vous conseil vivement de faire cette mise à jour car elle règle le problème de connexion (avant la mise à jour le clavier passait son temps à se déconnecter et se reconnecter à mon ordinateur, j'avais envisager de le retourner, mais j'ai changer d'avis.

J'ai écrit cet avis avec le clavier. À mon avis, c'est le meilleur clavier que j'ai eu jusqu'à maintenant. Je m'y suis habituer rapidement. Par contre, j'aurais préférer qu'il soit dans le format du sk630, mais en gardant toutes les fonctionnalités du sk621) Si cooler master ajoute une fonction sans fil au sk630, je vais probablement envisager de l'acheter. Une fois le firmware du clavier mis à jour, il n'y a plus de problèmes de connectivité bluetooth. J'aurais aimer avoir une option en 2.4 ghz afin de pouvoir l'utiliser dans le bios. Pour l'utiliser dans le bios, vous devez le connecter avec un cable usb type c.

One person found this helpful

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