HP 54656A Test Automation Module RS-232 Interface

HP 54652B Parallel / RS-232-C Interface Module

HP 54656A RS-232 Test Automation Module

Vintage Hewlett Packard 54659B RS-232 Parallel Interface Storage Module Untested

Keysight 54656A RS-232 Test Automation Module for 546XX Oscilloscopes

HP Agilent Keysight 54652B RS232 / Parallel Interface Module for 546XXB scope

HP / Agilent E1406A VXI GPIB Command Module - Slot 0 / Resource Manager RS-232

HP Hewlett Packard 03392-60900 RS-232 Computer DCE Cable 3393A DB-25 to 12-pin