Device Type: audio switch - 4 ports, Type: Desktop Ports: 4 x KVM / audio, no. KVM Local Users Qty: 1 local user, keyboard-/mouse: USB Max Resolution: 1920 x 1200 Features: Firmware upgradable, built-in Hi-Speed ​​USB Hub with 2 ports, HDCP compatible, video DynaSync, Built-in Devices: USB Hub Interfaces: Display / video: 4 x DVI-Analog/Digital - 29 pin combined DVI | Hi-Speed ​​USB: 2 x USB Type B, 4 pin | Audio: 4 x mini-phone stereo 3.5 mm | Microphone: 4 x mini-phone 3.5 mm | Display / video: 1 x DVI-Analog/Digital - 29 pin combined DVI | Keyboard: 1 x USB - USB Type A 4-pin | Mouse: 1 x USB - USB Type A 4-pin | Audio: 2 x mini-phone stereo 3.5 mm | Microphone: 2 x mini-phone 3.5 mm | Hi-Speed ​​USB: USB Type A, 4-pole, Power Device: Power adapter - external, Power Consumption Operational: 9 Watt, Width: 27 cm Depth: 8.7 cm, height: 5.5 cm, weight: 0.94 kg, Min Operating Temperature: 0 ° C Max Operating temperature: 50 ° C Humidity Range Operating: 0 - 80%