Device Type: KVM / audio / serial extender, Type: External, Connectivity Technology: Wired, keyboard / mouse interface: USB, Max Resolution: 1920 x 1200 @ 60 Hz Max Transfer Distance: 300 m, interfaces: 1 x Keyboard - USB - USB Type A 4-pin | 1 x display / video - VGA - HD D-Sub (HD-15), 15-pin | 1 x mouse - USB - USB Type A 4-pin | 1 x Audio - Line In - Mini-phone stereo 3.5 mm | 1 x microphone - input - mini-phone stereo 3.5 mm | 1 x serial - RS-232 - D-Sub (DB-9), 9-pin, Cables Included: 1 x keyboard / mouse / video / audio cable - 1.8 m, Rack Mounting Kit: Included, marking: DDC-2B, DDC, Power Device: Power adapter - external, Installed Qty: 2, Max. Supported Qty: 2 Min Operating Temperature: 0 ° C, Max. Operating temperature: 50 ° C, Humidity Range Operating: 0 - 80%