(Blue switches) USB Numeric Keypad,SADES Mechanical USB Wired Numeric Keypad 22 Key Numpad with LED Backlit- Black

Features: SADES Mechanical Numeric Keypad/SADES (Blue switches) USB Numeric Keypad -- Blue Switches Professional mechanical Blue switches with tactile bump and audible click -- LED adjustable backlit "Esc+Del"=Supporting backlit modes(Full-lighting,breathing,lights-off,etc) -- Plug&PLAY Supports NumLock, ESC, Tab, Delete etc. With shortcut key which can open the computer calculator directly --Supporting for Windows 2000, for Windows XP, for Windows VISTA, for Windows 7/8,etc Specifications: Brand name: SADES Material: ABS, aluminium Working voltage: 5V 0.25V Working current: 350mA max Working temperature: 0+40 ? Weight:255g Size: 140.5x86x36mm Size(with back stands): 177x110x45mm Cable length: 1770mm Package includes: 1 x USB Wired Mechanical Numeric Keypad 1 x Manual