... of transportation and the efficiency of energy costing. Plug one USB cable into your laptop, instead of separate keyboard / mouse / speakers ... 1600*1200;-Audio : Supports 2 channels (Earphone and MIC) audio;-USB 3.0/2.0:Connects Hard Disk,Scanner,Printer,Mouse ... , Keyboard, Flash Disk,Memory Card and some other USB devices;-RJ45:Supports 10/100Mbps Ethernet input;-Esata:Supports external ...