BQLZR Mini PCI-E to PCI-E Express 1X Extension Cord Adapter Card with USB Riser Card USB Specification, Release 2.0 Hi-Speed (Up to 480Mbps) PCI Express Card Electromechanical (CEM) Specification 1.1 USB Specification, Release 2.0 Hi-Speed (Up to 480Mbps) System Management Bus (SMBus) Power Supply: 3.3V & 1.5V(For PCIe Slot, from Mini PCIe slot)