DATA SYSTEMS USB 2.0 PCI HOST CARD - 4-Port Features: USB (Universal Serial Bus) 2.0 specification compatibility Compatible with OHCI (Open Host Controller Interface) Compatible with EHCI (Enhanced Host Controller Interface) Hot-swappable and real plug-and-play capability Provides four USB root ports, each port supports with 1.5Mbps, 12Mbps full speed and 480Mbps high-speed function Supports overcurrent and high inrush current protections Provides bus-fault detection and reconfiguration PCI interface specification V.2.2 compliant Specifications: Downstream port: four USB series-A receptacles Data transfer rate: high speed 480Mbps, full speed 12Mbps, low speed 1.5Mbps by each port Output voltage per port: 5VDC Output current per port: 500mA Operating temperature: 5 to 40 degrees Celsius Stock temperature: -20 to 60 degrees Celsius Humidity: 0% to 80% RH, non-condensing Unit weight: 64g Size (H x L): 90 x 120mm