1. No need for additional power supply for normal identification and operation, optimized board plane structure, quick and easy installation, keeping the Mac Pro case tidy-through quick and easy installation, this PCI Express card is expanded by four high-speed USB3 The Mac Pro .0 interface provides a simple solution for connecting from Mac Pro to USB 3.0 devices 2. Expanded 1 USB 3.0 Type C, 3 Type A downstream ports for standard desktop PC 3. Comply with USB 3.0 specification. Bus-powered mode, most peripheral devices do not need external power supply 4. Compatible with USB 2.0 and 1.1 specifications. 5. The transmission rate is up to 5.0Gbps-10 times faster than USB2.0 · Plug and play and hot plug function. Product name: PCI-e to USB3.0+Type-C multi-port expansion card Interface type: PCI-E 1x Applicable models: conventional desktop computers (need to have an idle graphics card interface) Number of interfaces: USB3.0 x 3 Type-C interface x 1 Use chip: FL110 No need for external power supply Support: WindowsXP/win7/win8/win8.1/win10 and other common systems According to the conditions: Available PCI-E 1x/4x/8x/16x graphics card slot Colour:black Material:Metal + PCB Size:12.7 x 6.6 x 1.5cm Package Contents: 3 x PCI-E Expansion Card