Chipset: EXAR XR21V1414 Compliant with USB Specification, Revision 2.0 Communication speed: Serial port: Up to 921.6Kb/s Surge protection: 600W Interfaces/Ports: Input: 1, 4-pin, USB 2.0, Female Input: 1, Terminal Block (3 Wire) Input: 1, DC Jack Output: 4, 9-Pin, Serial, RS-232, Output, Male Color: Black Power requirements: Input voltage: 9Vdc24Vdc Data bits: 7, 8, or 9 Power: 12V DC Power adapter Certifications/Standards: FCC, CE, RoHS Country of origin: China Requirements Desktop or notebook computer with an available USB port Windows 8 (32-/64-bit) / 7 (32-/64-bit) / Vista (32-/64-bit) / XP (32-/64-bit) / Server 2003 2008 (32-/64-bit) / Server 2008 R2 Mac OS X v10.4 or later Package Contents 8-Port Industrial USB to RS-232 Serial with 15KV ESD USB 2.0 Type A to B cable (2 meters) Power adapter DIN-Rail and wall mount kit Terminal block Driver CD Installation guide Weight 2.07 Item Dimension 2.76 x 7.87 x 6.61 Warranty Information 5 Years