Redragon CASTOR K631 vs CASTOR K631 Pro SEWired vs Wireless Choice
Choose the K631 for a lower-cost wired experience, or the K631 Pro SE for tri-mode wireless connectivity.
KeebFinder may earn a commission when you buy through these links, at no extra cost to you.
Which one should you get?
Get the
Redragon CASTOR K631
Wired
Build quality in the bottom 40% of 65% boards under $100.
- Lower cost entry point for a hot-swappable 65% keyboard.
- Includes four extra Outemu red switches in the package for modding.
- Wired-only design eliminates potential wireless latency or battery concerns.
Get the
Redragon CASTOR K631 Pro SE
Wireless Choice
Build quality in the bottom 25% of 65% boards under $100.
- Tri-mode connectivity with USB-C wired, Bluetooth, and 2.4GHz wireless.
- Includes a 1600mAh rechargeable battery for cordless use.
- Features a translucent base that, according to Redragon, enhances RGB lighting effects.
Your budget and need for wireless freedom dictate this choice. If you exclusively use a desktop PC and want the most affordable path to a hot-swappable 65% keyboard, the Redragon CASTOR K631 is the sensible pick. If you value a clean desk, need to connect to multiple devices, or plan to use the keyboard with a laptop or tablet, the K631 Pro SE's tri-mode wireless capabilities are worth the higher cost.
The differences that matter
Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.
Redragon CASTOR K631
Redragon CASTOR K631 Pro SE
Connection
Wired
Bluetooth, 2.4 GHz, Wired
Wireless for several devices and wired for lower latency
Switch options
Linear
Clicky, Linear
Weight
430 g
470 g
Heavier boards stay planted and lighter ones travel
- Redragon CASTOR K631
- Redragon CASTOR K631 Pro SE
- Performance
- 7471
- Build quality
- 5951
- Productivity
- 5649
- Customizability
- 6556
- Portability
- 7383
- Layout size: 65%
- Hot-swappable
- Case material: Plastic
- Mount style: Bottom Mount
- Keycaps: ABS
What will you mostly use it for?
The K631 Pro SE is the clear choice for mobile and flexible setups, winning in Office, Travel, and Content Creation due to its wireless modes and battery. The standard K631 holds an edge for modders because it includes spare switches and has a lower entry cost. For stationary, performance-focused uses like Gaming and Programming, the keyboards are effectively tied, making the decision purely about connectivity preference versus price.
It's a tie
- Both feature N-key rollover and dedicated arrow keys for FPS gaming.
- Both are hot-swappable and support per-key RGB customization via software.
- The K631 Pro SE offers a 2.4GHz wireless mode for a cable-free desk, while the K631 provides a simpler, wired-only connection.
Redragon CASTOR K631 vs CASTOR K631 Pro SE specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
3 of 17 specs differ
Redragon CASTOR K631
Redragon CASTOR K631 Pro SE
Switch options
Hot-swappable
Mount style
Layout size
Layout standard
Ergonomics
Display
Connection
Battery
USB-C
Case material
Keycaps
Weight
Dimensions
Backlight
N-key rollover
Released
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
Prices in USD are converted to your currency and can change at any time. KeebFinder may earn a commission when you buy through these links, at no extra cost to you.
Lowest price across stores, Amazon excluded.
Redragon CASTOR K631 vs CASTOR K631 Pro SE: your questions
The primary difference is connectivity. The K631 is a wired-only keyboard, while the K631 Pro SE adds tri-mode wireless support via Bluetooth and 2.4GHz, plus a 1600mAh battery. The Pro SE also features a translucent case design for enhanced RGB.
Yes, both the K631 and K631 Pro SE feature a free-mod plate-mounted hot-swappable PCB. Redragon states they are compatible with almost all 3-pin and 5-pin mechanical switches on the market.
For pure latency consistency, the wired K631 offers a direct connection. The K631 Pro SE provides a 2.4GHz wireless mode for a cable-free experience, which many find suitable for gaming. Both have N-key rollover and support gaming macros via software.
Yes, the Redragon K631 Pro SE listing specifies it supports Bluetooth 3.0/5.0 in addition to its 2.4GHz wireless and USB-C wired modes.
The K631 comes with Outemu red linear switches. The K631 Pro SE comes with custom quiet linear switches, and the product metadata indicates it is also available with clicky switch types.
Yes, both models support Redragon's pro software. This software allows for designing custom RGB lighting modes and effects, as well as programming macros and keybindings.
The K631 includes the keyboard, user manual, keycap puller, switch puller, USB-C cable, sticker, and four extra red switches. The K631 Pro SE includes the keyboard, user manual, keycap puller, switch puller, and a dual-ended USB-A/C cable.
The product description does not explicitly state this, but keyboards with similar USB-C wired and wireless designs typically allow for passthrough charging and use. You can use it in wired mode at any time.
Both are highly portable 65% keyboards. The K631 Pro SE is more convenient for travel due to its wireless functionality, though it is 40 grams heavier. The standard K631 is lighter but requires a cable connection.
Both keyboards use ABS keycaps with an OEM profile. The specific colorways and legends may differ between the standard and Pro SE models.
No, according to the specifications listed for both models, neither the K631 nor the K631 Pro SE includes a wrist rest.
Not sold on either?
Still torn?
Answer a few quick questions and the keyboard finder ranks 2,000+ boards by how you will actually use yours.