OS SUPPORTED Windows OS Linux 2.4 or later Package Content 1x USB 2.0 to 4 Port Serial Adapter 1x Driver CD 1x USB Type A to B Cable 1x Instruction Manual 1x Power Adapter 4x RS232 to RS422/485 converters Item Dimension (L inchxW inchxH inch) 12 x 8 x 2 Weight 2.15lb Warranty Information 1 Year