Highlights: Convert an unused 5.25" CD-ROM drive space into 4 USB 3.0 Port and 2 USB 2.0 Ports Plug and Play, Don't need the power supply Super-Speed USB 3.0 supports data transfer speeds up to 5 Gb/s (maximum). Backward compatible with USB 2.0 / 1.1. Compatible with Windows XP/Vista/7/8/ 8.1 /10 Sturdy metal construction endures wear and tear, ensuring long-term use
Note: The USB 3.0 20 Pin connector is actually 19 pin and The USB 2.0 10 Pin connector is actually 9 pin, as one pin of the connector is blocked up. Please connect the 4 Pin Power Connector if the USB 3.0 ports don't powered by PCI-E connector