Clone Case Rear Panel Holes

[zanfar]

I'm simply curious: does anyone know what the "other" holes on the back panel of the clone case are designed for?

Obviously, there are DB-25 mounts, a fan mount, and the power cord inlet, but the two holes under the DB-25s and the three near the power cord elude me. As far as I can tell, none are referenced in the clone, front panel, or original Altair manuals.

I'm considering modifying my rear panel, or maybe even fabricating an alternative panel, to accept an IEC power inlet instead of the cord grommet and want to make sure I'm not locking myself out of some unknown features.

Thanks!

[AltairClone]

The two holes under the DB-25 cutouts are for the cassette interface audio jacks (record and play). The other holes on the clone cabinet are for power supply mounting.

Mike D