DROP - CSTM80 TKL Wired Mechanical Gaming Keyboard with RGB Backlighting - Prism
About this product
Shine a light through a prism, and you’ll see a brilliantly refracted rainbow. Get your hands on the Drop CSTM80 Prism Keyboard, and you’ll bring a very similar rainbow to your desktop—with typing as good as that elusive pot of gold. Featuring multicolored DCD Prism Keycaps and an innovative, magnetically detachable white CSTM80 Case, this is one prism you can easily personalize. Inside, south-facing switch sockets ensure that all RGB LEDs shine bright—while Gateron KS-3 Milky Yellow Pro Switches, customizable gasket mounting, and a full array of case foam deliver next-level typing.
Color
PrismMechanical Keyboard
Tenkeyless (TKL) layout with 88 keys
N-key rollover
Every single key you press is registered as a separate input
Magnetic decorative top case
Gasket-mounted with removable gaskets
Stabilizers
Gateron PCBA-mounted stabilizers (screw-in)
Switch
Gateron Yellow KS3 Switches
- Form FactorTenkeyless (TKL)Connection TypeWired
Reviews
Rating 4.7 out of 5 stars with 117 reviews
Customer Images
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Compare similar products

Shine a light through a prism, and you’ll see a brilliantly refracted rainbow. Get your hands on the Drop CSTM80 Prism Keyboard, and you’ll bring a very similar rainbow to your desktop—with typing as good as that elusive pot of gold. Featuring multicolored DCD Prism Keycaps and an innovative, magnetically detachable white CSTM80 Case, this is one prism you can easily personalize. Inside, south-facing switch sockets ensure that all RGB LEDs shine bright—while Gateron KS-3 Milky Yellow Pro Switches, customizable gasket mounting, and a full array of case foam deliver next-level typing.

Introducing: The GMMK PRO prebuilt - an Ultra-Premium 75% Layout, Gasket-Mounted Modular Mechanical Gaming Keyboard. This keyboard is truly in a league of its own! This keyboard is a showpiece of design and engineering. Intended for enthusiasts, gamers & professionals with an appreciation for quality, the GMMK PRO has been thoughtfully crafted for a uniquely pristine acoustic and haptic typing experience. This board is packed with every feature you could dream of. Our patented fully modular design enables you to easily hot-swap any switch in your arsenal. The gasket-mounted PCB with 5-pin south-facing sockets provides near-perfect sound isolation. A programmable rotary encoder knob, 16.8 Million per-key RGB, and our premium screw-in GOAT stabilizers elevate to the next level – all powered by a powerful 32-Bit ARM processor. This board works out of the box with our easy-to-use ‘Glorious Core’ software and is compatible with QMK / VIA open-source firmware.** Beautiful & durable, all of this is contained within an aesthetically stylish case, each individually CNC machined and engraved from high-quality aluminum. Signature side lighting panels make it shine.

The Eye is moving—and it’s fallen onto our Mech Keys community. What began as a keycap set has now taken shape as a full board. Meet the Drop + The Lord of the Rings Black Speech Keyboard: a Mordor-inspired centerpiece poised to conquer your desktop. New to this build is a matching black aluminum case with custom artwork by OSHETART depicting the Eye of Sauron atop Barad-dûr. Beyond the aesthetics, the typing is scary-good, too, thanks to our Phantom Stabilizers paired with our Holy Panda X Switches for a tactile feel worthy of the Dark Lord himself. One does not simply walk into this keyboard.

Meet GMBK 75%—a high-performance RGB gaming keyboard built for gamers who want pro-level performance without that pro-level price. Designed for customization, durability, and optimized functionality, this board delivers everything you need to easily upgrade your battlestation.Dominate matches and show off your style with GMBK, featuring double the RGB zones as the competitors. Independently control 10 vibrant RGB zones to perfectly match your gaming setup's aesthetic. Quickly adjust color, brightness, and dynamic effects in seconds with Glorious CORE software. Talk about peak style with zero hassle. Unlike other entry-level keyboards, GMBK 75% features hot-swappable keycaps compatible with MX-style stems. That means you can switch up your look anytime, no soldering or premium price tag required. Hey, life happens—spills, crumbs, rage-quits. With its IP57 rating, this board is water- and dust- resistant, ready to survive whatever energy drinks and midnight snacks you throw its way. Plus, GMBK's fade-resistant keycaps and ultra-responsive switches make sure your inputs feel clean and fast every time. The optimized 75% layout is smaller than TKL keyboards, so you're getting extra mouse space without compromising on essential keys. And yes, there’s even room for a dedicated media knob. Because adjusting volume mid-game should be quick, not clunky.
| Pros for DROP - CSTM80 TKL Wired Mechanical Gaming Keyboard with RGB Backlighting - Prism | |||
|---|---|---|---|
| There were no pros for this product— | Build Quality, Weight, RGB Lighting, Switches, Customization | Build Quality, Key Feel, Switches, Weight, Keycap Design | Build Quality, Key Feel, RGB Lighting, Size, Connectivity |
| Cons for DROP - CSTM80 TKL Wired Mechanical Gaming Keyboard with RGB Backlighting - Prism | |||
| There were no cons for this product— | Price | Back Lighting | There were no cons for this product— |









![esc 1 ! 2 @ 3 # 4 $ 5 % 6 ^ 7 & 8 * 9 ( 0 ) - = | F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 tab Q W E R T Y U I O P [ ] { } | caps A S D F G H J K L : : enter shift Z X C V B N M , < > ? shift ctrl alt fn ctrl](https://pisces.bbystatic.com/image2/BestBuy_US/images/products/bc5bce35-ca08-45da-bcc3-8d6fb215154b.jpg;maxHeight=232;maxWidth=233?format=webp)
![Sure, here is the corrected and grouped text from the image:
**Top Row:**
- ESC
- F1
- F2
- F3
- F4
- F5
- F6
- F7
- F8
- F9
- F10
- F11
- F12
- PRTSC
- DEL
**Number Row:**
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 0
- -
- =
- \
**Letter Row:**
- TAB
- Q
- W
- E
- R
- T
- Y
- U
- I
- O
- P
- [
- ]
- \
**Letter Row:**
- CAPS
- A
- S
- D
- F
- G
- H
- J
- K
- L
- ;
- '
**Letter Row:**
- SHIFT
- Z
- X
- C
- V
- B
- N
- M
- ,
- .
- /
**Function Row:**
-](https://pisces.bbystatic.com/image2/BestBuy_US/images/products/9be10b95-8e90-4a5d-b85f-cbc6a7d8e8df.png;maxHeight=232;maxWidth=233?format=webp)
![esc F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 1 2 3 4 5 6 7 8 9 0 - = backspace tab Q W E R T Y U I O P [ ] \ caps lock A S D F G H J K L ; ' shift Z X C V B N M , . / shift ctrl alt logi](https://pisces.bbystatic.com/image2/BestBuy_US/images/products/6411/6411501_sd.jpg;maxHeight=232;maxWidth=233?format=webp)
![Sure, here is the corrected and grouped text:
```
ESC F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 1 2 3 logitech - - 1 2 # $ 4 % 5 6 & 7 8 9 0 - - back insert home page up num lock clear / . tab Q W E R T Y U I O P { [ } ] / delete end page down 7 home 8 A 9 P9 up + caps lock A S D F G H J K L : ; a enter 4 5 6 shift Z X C V B N M < > ? shift 1 end 2 3 pg dn enter ctrl fn start alt opt alt crnd x alt cmd x fn ctrl alt opt 0 ins del 1 logitech
```](https://pisces.bbystatic.com/image2/BestBuy_US/images/products/5761/5761911_sd.jpg;maxHeight=232;maxWidth=233?format=webp)

![Sure, here is the corrected and grouped text from the image:
---
**Top Row:**
- Esc
- F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12
**Second Row:**
- 1 ! 2 @ 3 # 4 $ 5 % 6 ^ 7 & 8 * 9 ( 0 ) - _ + =
**Third Row:**
- Tab Q W E R T Y U I O P [ { ] } \
**Fourth Row:**
- Caps Lock A S D F G H J K L ; ' Enter
**Fifth Row:**
- Shift Z X C V B N M , . / Shift
**Function Keys:**
- F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12
**Right Side:**
- Insert Home Page Up Delete End Page Down
**Bottom Row:**
- Ctrl Alt Spacebar Alt Ctrl
**Additional Keys:**
- Logi
- Scroll Lock
- Pause Break
---
This should match the layout of the keyboard in the image.](https://pisces.bbystatic.com/image2/BestBuy_US/images/products/0ce0f170-380c-41e4-8d6a-fa0aadbd534c.jpg;maxHeight=232;maxWidth=233?format=webp)

![Esc F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 Print Screen Scroll Lock Pause Break 1 2 3 4 5 6 7 8 9 0 - + = Backspace Insert Home H Page Up A Num Look 1 I Tab Q W E R T Y U I o P { [ } ] I I Delete End IN Page Down 7 Home 8 9 Pg Up Caps A Lock A S D F G H J K L ; : DE g Enter 4 5 6 Shift Z X C V N M < > ? I Shift 1 End 2 3 Pp Dn Enter Ctrl Alt Alt Ctrl 0 Ins Del](https://pisces.bbystatic.com/image2/BestBuy_US/images/products/a588d446-5678-40ae-86b8-1f15e0026e66.jpg;maxHeight=232;maxWidth=233?format=webp)























































