The cPCI-3534 is an enhanced four ports serial communication module used for Compact-PCI platform. It includes a PGA (Programmable Gate Array) to support the serial communication controller and a 37-pin connector to connect external I/O port from the front panel or using the rear IO.
The expansion cable has four standard DB25 or DB9 connectors and one DB37 connector to connect with cPCI-3534 interface card.
The cPCI-R3534 transition board can support rear I/O connection by using one DB37 connector.