HP 16550A User Reference page 254

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HP 16550 Installation Considerations
Before installing a one-card module, be sure the cables are connected
correctly for a one-card module.
Directions for connecting the cables are printed on the circuit board.
To configure a one-card module
• When shipped separately, the module is configured as a one-card
module. The cables should be connected as shown.
To reconfigure a two-card module into a one-card module, remove the cables
connecting the two cards, then re-connect the cables as shown.
To remove a cable from the cable connector on the board, gently pry the
hard plastic part of the cable assembly away from the connector using a
screwdriver. Do not pull on the soft ribbon part of the cable assembly as
_ _ _ _ _ _ _ this can damage the cable assembly.
Cables
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