Eaton 8-Port Serial Card 544621 Rev 2 PCB Board

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National Instruments 186936A-01 Serial Breakout Module RS-232 16-Port, 418175

LAM RESEARCH PL TTL I/O Card 810-001314-003 PWB Printed Wiring Board

DIGIBOARD P/N 30000352 , TI 16C450N, DBI A/N 30000354 8 Port Serial ISA Rev J

[Used] ADVANTECH / PCL-730 / 32 CH ISOLATED / TTL DIGITAL I/O Rev.B2, 1pcs

Electroglas 246067-001 4 Port Serial I/O Assy II PCB Card Rev. L 4085x Horizon

Axcelis Technologies, 8 PORT SERIAL CARD, ASSY 544622