KEYBOARD (คีย์บอร์ด) KEYCHRON K4 MAX (BLACK) (QMK/VIA) (KEYCHRON SILENT K PRO RED SWITCH RGB EN/TH) (K4M-H6-TH)

Sub description • Keychron Silent K Pro Red Switch (Linear) • QMK / VIA • RGB • English / Thai Keycap • ANSI • Wired (Detachable USB-C to USB-A) • 2.4GHz Wireless • Bluetooth 5.1 • Hot Swappable (3 / 5 pin) • Windows / macOS / Linux Specification Detail SPECIFICATION • Number of Keys : 100 (96%) • Switches : Keychron Silent K Pro Switch • Switch Face : South-facing • Number of Multimedia Keys : 12 • Frame Material : ABS / ABS+Aluminum frame • Keycap Material : Double-shot PBT • Layout : ANSI • Polling Rate (2.4GHz and Wired Mode) : 1000Hz • Polling Rate (BT Mode) : 90Hz • N-Key Rollover (NKRO) : Yes for both wireless and wired modes CONNECTIVITY AND POWER • Backlit : 22 types of RGB backlight options plus endless possibilities • Battery : 4000 mAh rechargeable li-polymer battery • Switch Face : South-facing • Wireless Working Time (Backlit off) : Up to 256 hours (Lab test result may vary by actual use) • Wireless Working Time (RGB) : Up to 168 hours (Lowest brightness) • Connection : 2.4 GHz / Bluetooth / Type-C wired • Bluetooth version : 5.1 • Bluetooth Device Name : Keychron K4 Max Compatible System : macOS / Windows / Linux PHYSICAL UNIT • Weight : 1280 g / 2.82 lbs • Dimension : 390.6 x 139.2 mm (15.38 x 5.48") • Weight : 1530g / 3.37 lbs • Height incl. keycap (front) : 24 mm (0.94") • Height incl. keycap (rear) : 31 mm (1.22") • MCU : ARM Cortex-M4 32-bit STM32F402 (256KB Flash) • Typing Angle : 3.43º, 7.26º and 10.06º • Operating Environment : -10 to 50℃