IBM PCjr

8 Turn your IBM PCjr so the front is toward you.
9 Remove the power board by gently pulling it
straight up.
10 If your system has the IBM PCjr 64KB Memory
and Display Expansion Option or the IBM PCjr
Internal Modem Option installed, they must be
removed to continue with this option
installation. Remove them by gently pulling
them straight up.
64KB Memory
and Display
Expansion Option
Power Board
6 Diskette Drive
Internal
Modem
Option