Backwards compatible with USB 2.0 devices Supports simultaneous operation of multiple USB 3.0 and USB 2.0 devices Supports 4 downstream ports for all speeds Supports Windows 7/Vista/XP 32/64-bit, Server 2003-2008 32/64-bit Molex power required
Protronix 4-Port USB 3.0 PCI Express (PCIe) Host Controller Card
by NeweggConsumer Electronics
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