Adds three USB 3.0 ports and one Gigabit Ethernet port to your PCIe enabled desktop computer Adds three USB 3.0 ports and one Gigabit Ethernet (RJ45) port through an available PCI Express slot Supports USB data transfer rates up to 5Gb/s shared among the 3 USB ports, and backward compatible with USB 2.0/1.1 devices Provides reliable wired network connection with speeds up to 1000Mbps Supports UASP (USB Attached SCSI Protocol), dramatically increases data transfer speed when used with UASP supported storage enclosures with SSD mediaNote: Windows 10 and 8 have built in UASP support using their embedded USB 3.0 drivers only Each USB 3.0 port provides power output up to 5V/900mA Multi-port feature allows connecting up to 3 USB devices simultaneously avoiding frequent swapping in and out of your devices