Keychron V5 Max Barebone Keyboard Keychron V5 Max is a custom mechanical keyboard (Barebone Version), upgraded with 2.4 GHz wireless connection, and gasket mount design. Its 1000 Hz polling rate (on both 2.4G and wired modes), sound-absorbing foam, and more are taking your typing experience to a new level. Remap with QMK & VIA Simply connect the V5 Max to your device with a cable, drag and drop your favorite keys or macro commands to remap any key you want on any system (macOS, Windows, or Linux). ARM Cortex-M4 32-bit STM32F402 MCU which is powerful, and equipped with 256K Flash will provide more flexibility for developers. *Note: User can remap a key on wired mode only. Once it's done, the keymap will work on both wireless and wired modes. 2.4 GHz and Bluetooth Connection The 2.4 GHz wireless and wired connection boasts a rapid 1000 Hz polling rate (90 Hz on Bluetooth mode). You can also connect the V5 Max with up to 3 devices via a stable Bluetooth 5.1 for seamless multitasking. RGB Backlight The south-facing RGB LED is designed to better illuminate the keyboard backlight from the typist’s angle. Hot-swappable The hot-swappable sockets are mounted on the PCB, so you can install or change the switches without soldering. The PCB supports both 3-pin and 5-pin MX mechanical switches. Screw-In PCB Stabilizers We’ve integrated the PCB-mounted screw-in stabilizers for a smoother typing experience with less wobbliness on the big keys such as space bar, shift, enter, and delete. The Keychron V1 Max also supports third-party screw-in PCB stabilizers. Specs Dimension 391.5 x 148.7 mm / 15.41 x 5.85 Inch Angle 3.5° / 7.1° / 9.5° Body Material ABS Plastic Plate Material PC Polling Rate 1000 Hz (2.4 GHz and wired) / 90 Hz (Bluetooth mode) Battery 4000 mAh Rechargeable li-polymer battery Compatible System Windows/macOS/Linux N-Key Rollover (NKRO) Yes for both wireless and wired modes Hot-swappable Yes. Compatible with most of the 3 pin & 5 pin MX mechanical switches such as Gateron, Cherry MX, Kailh, etc. Backlight South-facing RGB LED Stabilizer Screw-in PCB stabs BT Working Time Up to 100 hours (Lowest brightness) MCU ARM Cortex-M4 32-bit STM32F402 (256KB Flash) Mount Style Gasket Mount Design Operating Environment -10℃ to 50℃