IBM 4865 (External 3.5" floppy)

[Tony Duell]

> Some of the EARLY 5150 cases (mine had a white power switch, with a black
> power supply), had a knock-out for a DB25 and a small round knock-out that
> we presumed was for cabling power to external drives (which would be a bad

I am sure I once saw a 5160 XT with a power output socket (4 pin) mounted 
on a palte in place of that removeable blanking plate above the keyboard 
connecotr. It looked like an official IBM product, not a homebrew. But it 
wasn't my machine so I couldn't pull the cover to investigate. 

> idea with a 63.5 W power supply).  They also had an additional drive
> mounting screw up from the bottom.  Eventually IBM realized that that
> wasn't such a good idea - prob'ly after a few got tightened enough to warp
> drive castings?

I've seen PC/XT machines with a drive mounting screw going up from underneath

I doubt very much if you'd distort a Tandon TM100 drive chassis casting 
with that screw. More likely it was a right pain to fit said screw....

-tony