SIIG JU-SC0111-S1 4-Port USB to RS-232 Serial Adapter Hub Changer Type: USB to DB9 (RS-232) Specifications: Compliant with Universal Serial Bus 2.0 Specification Supports data transfer rate up to 230Kb/s Chip: Moschip MCS7840CV Interfaces/Ports: 1, 4-pin, Type B, USB, Female, Input 4, 9-pin, DB9, RS232, Serial, Male, Output Dimensions: 3.75 (W) x 2.26 (W) x 0.80 (D) Weight: 2.9 oz (81 g) Color: Silver USB Cable: Type A (4-pin), Male to Type B (4-pin), Male; 3.3 ft (1m); Black Certifications/Standards: FCC, CE, RoHS Package Contents: 4-Port USB to RS-232 Serial Adapter Hub USB 2.0 cable Driver CD User's manual