A4Tech KR-73FU. Device interface: USB, Purpose: PC/server, Keyboard form factor: Standard. Surface coloration: monotone. Power source type: USB. Packaging type: Box. Compatible operating systems: Windows 2000 XP(X64) 2003(X64) Vista, Depth: 165.1 mm (6.5 "), Height: 22.1 mm (0.87 ")