4 Port dual bus super speed USB 3.0 card adapter supports up to 10GBps total transfer bandwidth and delivers up to 900 am of power per port. 4 Port dual bus super speed USB 3.0 card adapter increases the efficiency of your device with two dedicated bus channels. Adapter is enhanced with UASP support and includes USB attached SCSI protocol. PCI express x4. Dimensions: 2.2"(H) x 0.6"(W) x 6.6"(L), cable length: 9.8'. Form factor: Plug-in card. Chipset ID: 2 x Renesas/NEC- Micro PD720202, Port style: Integrated on card, No. of ports: 4. Connector type: 1 x PCI express x 4 male, External ports: 4 x USB 3.0 A (9-pin, superspeed) female, Internal ports: 1 x LP4 (4-pin, molex large drive power) female, 1 x SATA power (15-pin) plug. Maximum data transfer rate: 5Gbps/2 ports. OS compatibility: Windows 8 (32/64), 7 (32/64), Vista (32/64), XP (32/64), Windows server 2012, 2008 R2, 2003 (32/64), Linux Kernel 2.6.31 or later. System requirements: Available PCI express x4 or greater slot. Operating temperature: 0- 50 deg C, Storage temperature:-20- 60 deg C, humidity: 5- 85% RH. Optional LP4 or SATA power connector provides up to 900 mA per USB port. Backward-compatible with USB 2.0 and USB 1.0/1.1 devices. Hot-swap feature to connect/disconnect devices without powering down the system. UASP support across all four ports. Supports USB battery charging specification 1.2 (Apple mode only). Includes 1 x 4 port PCIe USB card, 1 x low-profile bracket, 1 x driver CD, 1 x instruction manual. Certifications & standards: WEEE, RoHS, Green Compliant. Weight: 3.2 oz. Warranty: 2 years limited.