The NPIS520E150MTRF is a single-port Gigabit Ethernet network interface card (NIC) manufactured by NEC. It is a PCI Express (PCIe) x4 card that can be installed into a compatible PCIe x4, x8 or x16 slot to provide a high-speed connection over Gigabit Ethernet. The card features a single RJ45 port with LED indicators that indicate link status and speed. It is compatible with a wide range of operating systems, including Windows, Linux and Mac OS. It is a cost-effective solution for upgrading the existing network infrastructure to Gigabit Ethernet speeds.