Pocket-Sized RS-232/Serial Break Out Box, CablesOnline TS-BOB

3 Pocket-Sized RS-232/Serial Break Out Boxes, Cable abapters.

Trend Breakout Box with RS232 Monitor

Wavetek Model 725 Breakout Box Four State Line Powered RS232 Good Condition

RS-232 Breakout Box Interface Tester w/ Ribbon Cable Jumpers DB2

International Data Sciences Model 62 RS-232-C Duel LED Breakout Box w/ Manual

Vintage International Data Sciences Model 62 RS-232 Breakout Box Blue Tester