PCIE Riser Expansion Card 4 Ports PCI Express USB 3.0 High-speed Adapter for PC
Output: 5V/900mA MAX (each USB port). Supports for Windows 7/8/10/Vista/XP 32/64-bit, for Server 2003-2008 32/64-bit. Supports simultaneous operation of multiple USB 3.0 and USB 2.0 devices. External port: 4 x USB 3.0.