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CASTOR K631 Grey 65% Wired RGB Gaming Keyboard

Redragon CASTOR K631

The Redragon CASTOR K631 is a compact wired mechanical keyboard with a 65% layout that includes dedicated arrow keys and extra function keys. It suits users who want to save desk space while retaining essential navigation keys. Its hot-swappable design appeals to hobbyists who like to customize or replace switches without soldering. The keyboard is suitable for both work and casual gaming, especially for those who prefer a quieter, linear typing experience.</p... Read more
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CASTOR K631 Grey 65% Wired RGB Gaming Keyboard

Redragon
Redragon
Ships to US
$47
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Compare Redragon CASTOR K631 vs Keychron V2 vs Royal Kludge RK68 Specification

Compare similar keyboards side by side, or use the comparison table to compare all keyboards!
Redragon CASTOR K631Keychron V2Royal Kludge RK68
60
CASTOR K631 Grey 65% Wired RGB Gaming Keyboard
92
Keychron V2 QMK Custom Mechanical Keyboard ISO Layout Collection
RK68 65% Wireless Mechanical Keyboard (Single Color Backlit)
0.0 (0)
2.5 (17)
0.0 (0)
  • Released in 2023
  • Has Linear switch options
  • Features N-key rollover
  • Uses a Bottom Mount mounting style
  • Weighs about 430 g
  • Features ABS keycaps
  • Released in 2022
  • Has Linear, Tactile, Clicky switch options
  • Built with the ISO, ISO-DE, ISO-UK, ISO-FR, ISO-ES, ANSI layout standard
  • Comes with a knob
  • Provides dedicated media keys
  • Supports QMK firmware
  • Supports VIA configuration
  • Includes screw-in stabilizers
  • Uses a Tray Mount mounting style
  • Runs at a 1000 Hz polling rate
  • Weighs about 855 g
  • Sized at 20 x 123 x 330 mm
  • Made with a Plastic, ABS case
  • Offers Yes, Rgb, South-face, Rgb South-face RGB lighting
  • Released in 2021
  • Has Clicky, Tactile, Linear, Silent switch options
  • Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity
  • Equipped with a 1450 mAh battery
  • Weighs about 600 g
  • Sized at 39 x 309 x 103 mm
Scores
  • Performance: 71
  • Build Quality: 57.9
  • Productivity: 55.1
  • Customizability: 61.6
  • Portability: 71.4
Scores
  • Performance: 67.7
  • Build Quality: 86.7
  • Productivity: 95.2
  • Customizability: 100
  • Portability: 75.4
Scores
  • Performance: 55.3
  • Build Quality: 50.1
  • Productivity: 70.1
  • Customizability: 59.7
  • Portability: 86
Name
Redragon CASTOR K631
Name
Keychron V2
Name
Royal Kludge RK68
Release year
2023
Release year
2022
Release year
2021
Switch Options
Linear
Switch Options
Linear, Tactile, Clicky
Switch Options
Clicky, Tactile, Linear, Silent
Profile
Normal Profile
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Hot Swappable
 
Layout Size
65%
Layout Size
65%
Layout Size
65%
Layout Standard
ANSI
Layout Standard
ISO, ISO-DE, ISO-UK, ISO-FR, ISO-ES, ANSI
Layout Standard
ANSI
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Knob Support
 
Knob Support
 
Knob Support
 
Display Support
 
Display Support
 
Display Support
 
Mac/Win Support
 
Mac/Win Support
 
Mac/Win Support
 
Multi-Media Keys
 
Multi-Media Keys
 
Multi-Media Keys
 
USB-C
 
USB-C
 
USB-C
 
USB passthrough
 
USB passthrough
 
USB passthrough
 
Connection
Wired, Wired only
Connection
Wired, Wired only
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate
-
Polling Rate
1000 Hz
Polling Rate
-
Battery capacity
-
Battery capacity
-
Battery capacity
1450 mAh
Hall Effect Support
 
Hall Effect Support
 
Hall Effect Support
 
QMK Support
 
QMK Support
 
QMK Support
 
VIA Support
 
VIA Support
 
VIA Support
 
VIAL Support
 
VIAL Support
 
VIAL Support
 
N-Key Rollover
 
N-Key Rollover
 
N-Key Rollover
 
Rapid Trigger
 
Rapid Trigger
 
Rapid Trigger
 
Mount Style
Bottom Mount
Mount Style
Tray Mount
Mount Style
-
Screw in Stabilizers
 
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb
Backlight
 
Rgb, South-face
Backlight
 
Rgb
Case Colors
Case Colors
Case Colors
Case Material
Plastic
Case Material
Plastic, ABS
Case Material
Plastic
Keycaps Material
ABS
Keycaps Material
ABS, PBT
Keycaps Material
ABS, PBT
Dimensions
-
Dimensions
20 x 123 x 330 mm
Dimensions
39 x 309 x 103 mm
Weight
430g
Weight
855g
Weight
600g
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Product Description

The Redragon CASTOR K631 is a compact wired mechanical keyboard with a 65% layout that includes dedicated arrow keys and extra function keys. It suits users who want to save desk space while retaining essential navigation keys. Its hot-swappable design appeals to hobbyists who like to customize or replace switches without soldering. The keyboard is suitable for both work and casual gaming, especially for those who prefer a quieter, linear typing experience.

Key Features

  • 68 keys with a 65% layout that balances compactness and functionality by including arrow and function keys.
  • Hot-swappable sockets compatible with most MX-style mechanical switches, allowing easy switch replacement or customization.
  • Quiet linear red switches with soft key travel, providing a smooth and less noisy typing feel.
  • RGB backlighting with up to 20 preset modes, adjustable brightness, and speed, plus software support for custom lighting and macros.
  • Dual USB-C and USB-A wired connectivity options for flexible device compatibility.

Typing Experience

The keyboard uses quiet linear switches that reduce noise and offer smooth keypresses, making it suitable for office environments or shared spaces. The soft key travel helps reduce finger fatigue during extended use. Hot-swappable sockets enable users to try different switch types or replace worn switches without technical hassle.

Connectivity

The wired connection uses a combined USB-C and USB-A cable, which increases compatibility with various devices without needing adapters. This setup ensures a stable connection but limits mobility compared to wireless options.

Trade-offs

  • The 65% layout, while compact, may be less ideal for users who frequently use a full number pad or require extensive key clusters.
  • Wired-only connectivity restricts flexibility for users who prefer wireless setups.
  • Switches are basic linear reds, which may not satisfy users seeking tactile or clicky feedback.

Frequently Asked Questions (FAQ)

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