![StarTech.com PEXUSB3S4 Spec Sheet Download Page 2](http://html1.mh-extra.com/html/startech-com/pexusb3s4/pexusb3s4_spec-sheet_1365962002.webp)
Features
Adds four USB 3.0 ports in total; 3x External, 1x Internal
Fully compliant with USB 3.0 revision 1.0 specifications and Intel xHCI rev0.95 specifications, with transfer
rates up to 5 Gbps
Built-in optional SATA power connector for bus-powered USB devices
Optionally provides up to 900mA per USB port
Backward compatible with USB 2.0 and USB 1.0/1.1 devices
Compliant with PCI Express 2.0 specifications
Includes a Low Profile/half-height installation bracket
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