Compare Redragon CASTOR K631 vs CASTOR K631 Pro Differences Side by Side

This comparison is for buyers deciding between two nearly identical, budget-friendly 65% keyboards from Redragon. The choice hinges entirely on whether you value wireless connectivity or prefer a straightforward wired connection. Both share core features like hot-swap sockets, RGB lighting, and a compact 68-key layout, making the decision a direct trade-off between connection types and a few minor accessory differences.

Model
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Rating	0.0 stars (0 reviews)	0.0 stars (0 reviews)
Purchase Options
Main differences	Released in 2023 Supports Wired, Wired only connectivity Weighs about 430 g	Released in 2026 Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity Equipped with a 1600 mAh battery Weighs about 470 g Sized at 40 x 309 x 104 mm
Score	Scores Performance: 70.9 Build Quality: 57.9 Productivity: 55.2 Customizability: 61.2 Portability: 71.3	Scores Performance: 70.5 Build Quality: 56.8 Productivity: 54.1 Customizability: 58.6 Portability: 84.8
Name	Name Redragon CASTOR K631	Name Redragon CASTOR K631 Pro
Release year	Release year 2023	Release year 2026
Switch Options	Switch Options Linear	Switch Options Linear
Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 65%	Layout Size 65%
Layout Standard	Layout Standard ANSI	Layout Standard ANSI
Layout Ergonomics	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	Connection Wired, Wired only	Connection Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate	Polling Rate -	Polling Rate -
Battery capacity	Battery capacity -	Battery capacity 1600 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	Mount Style Bottom Mount	Mount Style Bottom Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb	Backlight Rgb
Case Colors	Case Colors	Case Colors
Case Material	Case Material Plastic	Case Material Plastic
Keycaps Material	Keycaps Material ABS	Keycaps Material ABS
Dimensions	Dimensions -	Dimensions 40 x 309 x 104 mm
Weight	Weight 430g	Weight 470g

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Pros and Trade-offs

Your choice should be guided by your need for wireless freedom. The Redragon CASTOR K631 Pro is worth the minimal price increase if you want to connect to multiple devices or keep your desk cable-free. If your setup is permanent and you prefer the simplicity of a wired connection, or if you value the included spare switches for modding, the standard CASTOR K631 is the more straightforward option.

Redragon CASTOR K631

+Includes four extra Outemu red switches in the package for immediate modding.
+Comes with both a dedicated keycap puller and a switch puller.
+Slightly lighter weight at 430 grams.
+Wired-only connection ensures consistent latency without battery concerns.

−Lacks wireless connectivity options (Bluetooth, 2.4GHz).
−No integrated battery, limiting placement flexibility.
−Does not have a detachable carrying strap.

Redragon CASTOR K631 Pro

+Offers tri-mode connectivity: USB-C wired, Bluetooth, and 2.4GHz wireless.
+Includes a 1600mAh battery for cordless operation.
+Features a detachable portable strap for easier transport.
+Comes with custom Dragon Chant linear switches.

−Slightly heavier at 470 grams due to internal battery.
−Vendor package listing does not mention including extra switches.
−Requires battery management and charging for wireless use.

Which Keyboard Is Better for Your Needs?

The K631 Pro is the clear choice for mobile and flexible setups, winning in Office, Travel, and Content Creation due to its wireless modes and detachable strap. The standard K631 holds a slight edge for modders because its package includes extra switches. For stationary, cable-tolerant uses like Gaming and Programming, the keyboards are functionally equivalent, making the decision purely about connectivity preference.

GamingTie

•Both feature N-key rollover and dedicated arrow keys for FPS gaming.
•Both are hot-swappable with linear switches, allowing for switch customization.
•Both support software for macro programming and RGB effects.

OfficeRedragon CASTOR K631 Pro

•The K631 Pro offers Bluetooth and 2.4GHz wireless for connecting to multiple devices without cable clutter.
•Its wireless modes provide easier flexibility in a shared or clean-desk office environment.
•Both use quiet linear switches suitable for office noise levels.

ProgrammingTie

•Both have the same 65% layout with dedicated arrow keys, preserving essential navigation.
•Hot-swappable sockets on both allow for switching to preferred tactile switches.
•Software support for macros can be used for coding shortcuts on either model.

TravelRedragon CASTOR K631 Pro

•The K631 Pro has a detachable strap, according to its vendor description, for easier portability.
•Wireless functionality eliminates the need to manage a cable while on the go.
•Both are compact and lightweight, though the Pro is slightly heavier at 470g.

ModdingRedragon CASTOR K631

•The standard K631 includes four extra red switches and both a keycap and switch puller in the box.
•Both share the same hot-swap free-mod PCB socket for switch compatibility.
•The vendor description for the K631 Pro lists only a combined keycap & switch puller, with no mention of extra switches.

Content CreationRedragon CASTOR K631 Pro

•Wireless connectivity reduces desk cable management for a cleaner streaming or recording setup.
•The ability to switch between wired and wireless modes offers flexibility during long editing sessions.
•Both support software for creating custom RGB profiles to match a content theme.