68-Pin Female SCSI to 68-Pin Female Screw Terminal, 60 VDC, DIN Rail Terminal Block—The TBX-68S provides 68 screw terminals to connect field I/O signals to 68-pin NI data acquisition devices such as the PXI-2501 and PXI-2503 PXI Multiplexer Switch Modules. It includes one 68-pin male SCSI connector for direct connection to 68-pin cables. The TBX-68 is mounted in a protective plastic base with hardware for mounting on a standard DIN rail.