This article covers HUYUN マウスボタンボード マイクロスイッチ 交換用 Logitech G900.
Overview
The HUYUN Mouse Button Board Micro Switch Replacement is a dedicated repair part for the Logitech G900 and G903 gaming mice. It includes a pair of left and right button PCBs with pre-installed D2FC-F-7N(20M) micro switches, the same type used in the original mouse. This product is designed to fix double-click issues and button chattering without soldering, making it an accessible solution for restoring the mouse's original feel. Targeted at users who want to extend the life of their G900/G903, this button board replaces the entire click mechanism in one swap. It's a cost-effective alternative to buying a new mouse, especially when the only problem is worn-out switches. The board connects via a micro USB cable inside the mouse, so no soldering iron is required.
Connectivity & Compatibility
Compatible models: Logitech G900 Chaos Spectrum, Logitech G903 Lightspeed (original version) Connection method: Internal ribbon cable connects to the board's micro USB port (plug-and-play, no soldering) Switches: D2FC-F-7N(20M) – rated for 20 million clicks, same as OEM The board is a direct replacement for the original left/right button PCB. Simply disassemble the mouse, unplug the old board, and plug in the new one. * Important: This product is ONLY compatible with G900 and G903. It will not fit other Logitech models such as G502, G703, or G Pro Wireless.
Product Info
Release: First sold on around 2020 Price range: Approximately ￥3,000–￥4,000 per set Warranty: HUYUN's warranty policy is not clearly stated; 's A-to-Z guarantee may apply Accessories: 1 pair of left/right button boards with micro switches pre-soldered Where to buy: Primarily available on Market position: Entry to mid-tier. It offers a simple, no-solder repair solution for a specific mouse model. While it's affordable and effective, the user must be comfortable with disassembling the mouse, which raises the skill requirement slightly above novice level.
Best Use Cases
Owners of G900/G903 suffering from double-click or chattering: This board is the most direct fix for button problems. Instead of replacing the whole mouse, you can swap the click mechanism in minutes. It's ideal for users who want to keep their favorite mouse rather than adapt to a new shape. Enthusiasts who are comfortable with mouse disassembly: The repair requires no soldering, but you do need to open the mouse, disconnect the ribbon cable, and reassemble everything. If you've ever replaced a mouse battery or swapped switches before, this will be a straightforward project. Users who want to preserve the original click feel: Because the included switches are the same model as the factory ones, the tactile feedback remains very close to stock. This is a big plus for gamers who are accustomed to the G900/G903's feel. Who should avoid this product: Beginners who have never opened a mouse before. While there are plenty of guides online, the G900/G903 has a complex internal structure with small screws and delicate ribbon cables. Also, if your mouse has other issues (e.g., sensor failure, scroll wheel problems), this board swap alone won't fix them.
