Single-port gigabit IBM PRO/1000 PF was designed with attention to high-perfomance network systems. The adapter is of 1000Base-SX standard of gigabit ethernet and supports high-speed data transfer through short range fiber-optic connections. The PROC1000PF has a PCI Express x4 interface which avoids delay and optimizes performance. As the adapter is single-port, it is restricted to use single-port applications like in data centers and server farms that have high-speed Internet. Many users that need fast and optimized connectivity to the internet trust the IBM PRO/1000 PF.