PCIE X4 to 8-port USB3.0 expansion card (inner 4 ports + rear 4 ports) independent four-channel bus 32G

PCIE X4 to 8-port USB3.0 expansion card (inner 4 ports + rear 4 ports) independent four-channel bus 20G

PCI-E X4 to 12-port USB3.0 expansion card (rear 6 ports + built-in 6 ports) independent six channels

PCI-E X4 to 12-port USB3.0 expansion card (6 front ports + 6 rear ports) independent six channels