The SIIG 3 Port PCIe USB 3.0 Adapt Card + Gigabit Ethernet LAN is a versatile port expansion card that adds 3 USB 3.0 ports and 1 Gigabit Ethernet LAN port to your computer. The card is designed to fit a PCIe slot and is compatible with various devices. With its high-speed USB 3.0 interface, this expansion card provides fast data transfer and connectivity for your computer system. The model LB-US0614-S1 is a reliable and efficient solution for expanding the ports on your computer.