4 Port USB 3.0 Pci Express Expansion Card Pci-E Adapter

1. Requires external power supply: You need to plug in a large 4-pin power port to work or use normally. 2.Standard PCIE interface: Manufactured in accordance with PCIE standards, meet product specifications. 3.High-speed transmission: data transmission up to 5gbps, after connecting USB3.0 peripheral devices, maintaining compatibility with existing USB peripheral devices. 4.Hot plug function allows you to connect / disconnect devices without shutting down the system 5.Compatible with Windows xp / Vista / 7 system (32/64 bit)