Texas Instruments TI-500
500-5038 - Texas Instruments
500 series TIWAY Network Interface ( NIM), RS232 + Local Line..
500-5040 - Texas Instruments
500 series TIWAY Network Interface ( NIM), with dual RS232 ports..
500-5840 - Texas Instruments
Adapter base, to fit 520C/530C/530T CPUs onto old style sump CPU bases..

