The channel interface of V2495 (V1495) and DT5495 can be freely expanded by adding up to three independent piggyback boards (there are 3 expansion slots interfaced to the User FPGA), choosing between five available types A395A, A395B, A395C, A395D, A395E. Therefore, the V2495 and DT5495 can achieve a maximum number of 194 I/O channels.
The A395C is a 32 ECL output channels piggyback boards.