M216 Double Wide Prototyping M-Module M217 Quad RS232 M-Module M223 16-Channel Digital I/O M-Module M224 16-Channel Isolated Digital Output M-Module M360 CAN Bus M-Module PX431S PXI Quad RS-232 VM100 VME Prototyping Module VX400B B-1 B Size Prototyping Module VX400C C-1 C Size Prototyping Module VX441C C-1 96 Bit Digital Multi-function Module VX442C C-1 96-Channel Static Digital Module