SMART Technologies SBM680, 77", 46.3 x 61.6" (1175 x 1565 mm), Capacitive, USB, White, 70.9" (1.8 m) SMART Technologies SBM680. Display diagonal: 77", Working area: 46.3 x 61.6" (1175 x 1565 mm), Technology: Capacitive. Interface: USB. Product color: White, Power cable length: 70.9" (1.8 m), Certification: REACH, RoHS, WEEE, ErP. Power consumption (typical): 7 W, DC input voltage: 5 V, Power consumption: 20 mA. Windows operating systems supported: Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium..., Mac operating systems supported: Mac OS X 10.6 Snow Leopard