D-Link DFE-500TX PCI Hzl Ethernet Badatrcs (Rev B/C):D-Link Systems´ ProFAST 10/100 Adapter (ProFAST Adapter) is an IEEE standard Ethernet network interface card for both 10Base-T and 100Base-TX networks. It is specifically designed for data intensive applications that need increased network throughput. The ProFAST Adapter operates in PCI bus computers and provides users with an easy migration path from 10Mbps networks to FAST Ethernet technology.