Transition Module for PP 81x/09x and PP 91x/01x, with interfaces for Flash Disk, Ethernet, COM, USB, SATA, … The AD PP5/011 Rear Transition Module is designed to be used with the Concurrent Technologies PP 81x/09x and PP 91x/01x CompactPCI® Processor board family primarily when combined with a Tech Source™ XMC graphics card.