The TURBOWAYS 622 Mbps PCI MMF ATM Adapter is a 64 - bit, universal PCI adapter that provides direct access to ATM networks through a dedicated 622 Mbps full-duplex connection. It is a PCI short form factor adapter and connects to the 622 ATM network through an LED-driven, dual-SC type, multimode fiber optics cable. The 622 PCI MMF Adapter uses 16 MB of SDRAM (synchronous dynamic random access memory) for control and 16 MB of SDRAM for packet memory.This adapter is designed for IBM eServer pSeries 615 Models 6E3 and 6C3.