MOTOSPEED K24 Pro RGB Backlight USB Wired Mechanical Numeric Keypad 21 Keys Numpad - White •Using two-color keycap technology •Domestic mechanical switch,durable •Transparent cover with wide luminous diffusion range •High-performance ARM COTEX-M0 core microcontroller design from Taiwan •Support full-key no-rush and single-button LED independent control under USB full speed •Support flash programming online update (32K memory) •Extended some buttons at the top,contains ESC,Tab,back and Fn Specification: •Dimension: 132mm (L) * 86mm (W) * 42.05mm (H) •Weight: 249 ± 10g (with cable),209 ± 10g (without cable) •Operating life: 50 million times •Cable length: 1.50M ± 1%,φ4.3mm,USB nickel-plated,five-core shielded black PVC leather wire •Working voltage: 5V ± 5% •Use the maximum current: 300mA •Interface type: USB2.0 •USB return rate 1MS/1KHZ •Connection with computer: wired •Operating system: WIN2000/WINXP/VISTA/WIN7/WIN8/WIN10 •Ergonomics: Support •Keyboard Type: High Key Cap Ladder Design •Number of word keys: 21 keys Package included: •1 x 21 Keys Numpad •1 x English and Chinese User Manual