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

This comparison is for buyers deciding between two very similar Redragon 65% wireless keyboards. The choice is difficult because the core specs, like hot-swap PCB, tri-mode connectivity, and 68-key layout, are identical. The decision hinges on minor feature differences, potential switch options, and current availability, making it a matter of prioritizing specific included accessories or aesthetics.

Model
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Rating	0.0 stars (0 reviews)	0.0 stars (0 reviews)
Purchase Options
Main differences	Released in 2022 Has Linear switch options	Released in 2023 Has Clicky, Linear switch options
Score	Scores Performance: 70.5 Build Quality: 55.9 Productivity: 53.2 Customizability: 59 Portability: 84.9	Scores Performance: 70.7 Build Quality: 50.8 Productivity: 49.3 Customizability: 56.4 Portability: 83.6
Name	Name Redragon CASTOR K631 Pro	Name Redragon CASTOR K631 Pro SE
Release year	Release year 2022	Release year 2023
Switch Options	Switch Options Linear	Switch Options Clicky, 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 Bluetooth, 2.4 GHz, Wired, Wireless	Connection Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate	Polling Rate -	Polling Rate -
Battery capacity	Battery capacity 1600 mAh	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 40 x 309 x 104 mm	Dimensions 40 x 309 x 104 mm
Weight	Weight 470g	Weight 470g

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Pros and Trade-offs

For most buyers, the standard Redragon K631 Pro offers the best value, providing all core features at a lower cost. Only choose the K631 Pro SE if its specific aesthetic upgrade with the translucent base and the convenience of the dual-USB cable are worth the premium and you can find it in stock. The performance and modding potential are otherwise equivalent.

Redragon CASTOR K631 Pro

+Includes a detachable portable strap for easier carrying.
+Generally available at a lower price point.
+Comes with a keycap and switch puller combo tool.
+Features tri-mode connectivity (USB-C, Bluetooth 3.0/5.0, 2.4GHz).
+Hot-swappable PCB supports both 3-pin and 5-pin switches.

−Lacks the translucent case design of the SE model.
−Does not include the dual USB-C/USB-A cable.
−Vendor description indicates shipping may be limited to EU and UK customers.

Redragon CASTOR K631 Pro SE

+Features a translucent base designed to enhance RGB lighting effects.
+Includes a 2-in-1 USB cable with both USB-C and USB-A connectors.
+Packaging lists separate keycap and switch pullers.
+Offers multiple colorway options (Mint & Black, Mint & White, Red & Black).
+Shares the same core hot-swap and tri-mode features as the standard Pro.

−Listed at a higher price point than the standard K631 Pro.
−Product page showed it as sold out at the time of comparison.
−Some user reviews mention firmware or mode-switching issues after updates.

Which Keyboard Is Better for Your Needs?

The K631 Pro holds an edge for office and travel due to its lower cost and included strap. The K631 Pro SE is better suited for modding and content creation, thanks to its translucent base and dual-USB cable. For gaming and programming, the keyboards are functionally identical, making the choice purely about accessory preference.

GamingTie

•Both offer identical tri-mode connectivity with USB-C, Bluetooth, and 2.4GHz wireless.
•Both feature N-key rollover and hot-swappable PCBs for switch customization.
•Both are listed by the manufacturer as dedicated for FPS gaming.

OfficeRedragon CASTOR K631 Pro

•The K631 Pro is listed at a lower price point, offering better value.
•Its included detachable strap may offer easier transport between workspaces.
•It comes pre-built with quiet linear switches, suitable for shared environments.

ProgrammingTie

•Both share the same 65% layout with dedicated arrow keys.
•Both support per-key RGB customization via software for layer indication.
•Both have hot-swappable sockets for changing to preferred switch types.

TravelRedragon CASTOR K631 Pro

•The K631 Pro includes a specifically mentioned detachable portable strap.
•Both have the same compact 65% form factor and identical weight.
•The lower price of the K631 Pro reduces risk for travel use.

ModdingRedragon CASTOR K631 Pro SE

•The K631 Pro SE features a translucent base designed to enhance RGB lighting effects.
•Both have the same free-mod hot-swappable PCB compatible with 3-pin and 5-pin switches.
•The SE model's listing mentions it includes both a keycap puller and a separate switch puller.

Content CreationRedragon CASTOR K631 Pro SE

•The K631 Pro SE's translucent base can provide more vibrant RGB for a streaming setup.
•Its included dual USB-C/USB-A cable offers more connection flexibility for different devices.
•Software support for macros is listed for both, aiding in shortcut creation.