SIIG ID-SC0A11-S1 4-Port Industrial USB to 422/485 Serial Adapter with 3KV Isolation Color: Black/grey Cable Length: 6 ft. Changer Type: USB to 422/485 Specifications: Chipset: FTDI2232H Interfaces/Ports - 4, 5-Pin, RS-422/485, Serial, Output, Female - 1, 4-Pin, USB, Type B, Input, Female Communication speed: Serial port: Up to 230 Kb/s USB: Up to 480 Mb/s Power requirements: 5V 3A DC / 9~36 VDC FIFO buffer: 4K bytes USB cable: 4-Pin, Type A (Male) to Type B (Male), 6 ft, Black Operating temperature: 32 to 130 degrees F (0 to 55 C) Operating humidity: 5% to 95% RH Dimensions: 7.7 x 3.2 x 1.5 Weight: 0.375 lbs. Package Contents: - 4-Port Industrial USB to 422/485 Serial Adapter Hub with 3KV Isolation - USB cable - Power adapter - Software CD