Kramer VIA Pad, VIA Step-in Touch Pad, Optional Step-in/Step-out Touch Pad accessory for the VIA product family, Enables users to easily view their laptop on a main screen connected to Kramer VIA, Mac and Windows compatible, Easy plug & play connection, Status LED ring, VIA software version 1.8 and higher, Power supply: 5 V DC, 55 mA, Dimensions: 8 x 7 x 1.4 cm, Weight: 0.1 kg