GP2040-CE Powered / Brook Compatible

Upgrade Your
Fight Stick's Brain.

Drop-in Brook UFB replacement board powered by RP2040. Sub-1ms latency with GP2040-CE firmware. Supports PC / PS3 / PS4* / Nintendo Switch.

Pre-order — ¥9,800 View Specs

* PS4 legacy mode supported. PS5 works with Brook authentication adapter.

RP2040 16MB 12MHz 3.3V ESD USB-C 20-PIN BROOK COMPATIBLE I2C RGB 5V BOOT RST FSB-GP40 GP2040-CE | v1.0

Freedom Brook Can't Give You

Same low latency. Same form factor. But vastly more customizable.

⚙

Configure Everything in Browser

WebConfig lets you remap buttons, SOCD modes, turbo, macros, and RGB — all from your browser. No software install. No firmware reflash. Brook can't do this.

🎯

4 SOCD Cleaning Modes

Up Priority / Neutral / Last Win / Off — switch between tournament-legal SOCD modes in one click. Brook only gives you one.

🔀

4 Profiles, Instant Switch

Save button layouts per game or character. Toggle switch on the board for instant profile swapping — even mid-session.

⚡

0.76ms — Matches Brook

USB 1000Hz polling, 0.76ms measured latency. Verified by inputlag.science methodology. As fast as Brook UFB.

🔄

Brook UFB Drop-in Swap

96.3×45.31mm, 4x M3 holes, 20-pin header — identical to Brook UFB. Unscrew, swap, done.

📺

OLED + RGB LED Support

Display inputs and frame data on OLED. Animate each button with RGB LEDs. Make your stick look as good as it plays.

vs Brook UFB

Same size, same speed. Different capabilities.

FSB-GP40
Brook UFB
Button Remap
Browser — instant
PC tool required
SOCD Cleaning
4 modes selectable
1 mode fixed
Profiles
4 saved + instant switch
None
Turbo
Per-button config
Basic only
OLED Display
Supported (input viewer)
Not supported
RGB LED
Supported (animations)
Not supported
Macros
Configurable
None
D-Pad/LS/RS
WebConfig toggle
Button combo
Input Latency
0.76ms
0.76-1.0ms
FW Update
Drag & drop
Dedicated tool
Price
¥9,800 (~$65)
¥12,000-15,000

* Brook UFB supports Xbox and native PS5. This board supports PC / PS3 / PS4* / Switch.

Technical Specifications

MCU
RP2040 — Dual-core ARM Cortex-M0+ @ 133MHz
Memory
264KB SRAM / 16MB QSPI Flash (W25Q128)
Board Size
96.3 × 45.31 mm (Brook UFB compatible)
Layers
2-layer FR-4, 1.6mm thickness
Finish
Matte black solder mask + ENIG gold plating
USB
USB-C (USB 2.0 Full Speed) + ESD protection
Input Connectors
20-pin header (2×10 2.54mm) + 20-pos screw terminal (3.81mm)
Expansion
I2C/OLED (4-pin JST) / RGB LED (3-pin JST) / 5V output (2-pin JST)
Platforms
PC (XInput/DInput) / PS3 / PS4* / Nintendo Switch
Input Latency
< 1ms (USB 1000Hz polling)
Firmware
GP2040-CE (open source / USB-updatable)
Mounting
M3 screw holes ×4 (Brook-compatible positions)

Pricing

First batch — Pre-orders open

Board Only
¥9,800 (tax incl.)

Shipping: ¥370 (Japan) / ¥1,500 (International)

  • ✓ GP2040-CE firmware pre-installed
  • ✓ Brook UFB-compatible form factor
  • ✓ Matte black PCB + ENIG gold finish
  • ✓ 20-pin header + screw terminals pre-soldered
  • ✓ Quick start guide included

Secure payment via Stripe. Manufacturing begins when batch target is met.

FAQ

Which fight sticks are compatible? +
Any stick that uses (or can fit) a Brook UFB. Compatible with Qanba Obsidian, Hori RAP N/V, Mad Catz TE2, Razer Panthera, Victrix Pro FS, and many more.
Does it work on PS5? +
GP2040-CE does not natively support PS5, but works with authentication adapters like Brook Wingman FGC or MagicBoots. PS4 titles running on PS5 work via legacy mode.
How do I update the firmware? +
Hold the BOOTSEL button while plugging in USB. The RP2040 appears as a USB drive — just drag and drop the latest .uf2 file. Done.
Can I remap buttons? +
Yes. GP2040-CE includes a WebConfig interface. Connect via USB, open your browser, and customize button mapping, SOCD cleaning, turbo, and more.
Is it tournament legal? +
Yes. GP2040-CE is widely used at EVO and major tournaments. SOCD cleaning complies with standard tournament rules.
Is there a warranty? +
30-day defect replacement warranty from the date of delivery for issues under normal use.