Type: USB Adapter Card External USB Ports: 1x 24V Power USB Connector 1x 12V Power USB Connector Internal USB Ports: 1x Internal USB Connector External Ports: 1x 4 pin Power Din Connector Internal Ports: 4x Jumper Connectors 1x LP4 Connector Data Transfer Rate: 480/12/1.5 Mbps Operating Systems Supported: Windows 2000/ME/2003/XP/Vista Dimensions: 4.72" x 2.63" / 120mm x 66.7mm