Small ATX like PSU

[nemo]

I have an older machine which came with a PSU that was a bit smaller
than a standard ATX supply. It is 6" wide and 3.5" tall, but only 4"
deep instead of the standard 5.5". It went up the other day after
some 6 years of operation. I don't seem to be able to find PSUs in
this form factor any more. I would like to continue to use this
machine, but I don't think I can fit a standard ATX supply.

Anyone know the name of this smaller form factor? Know where to get
them?

 

[nemo]

I have an older machine which came with a PSU that was a bit smaller
than a standard ATX supply. It is 6" wide and 3.5" tall, but only 4"
deep instead of the standard 5.5". It went up the other day after
some 6 years of operation. I don't seem to be able to find PSUs in
this form factor any more. I would like to continue to use this
machine, but I don't think I can fit a standard ATX supply.

Anyone know the name of this smaller form factor? Know where to get
them?

I found today that this size PSU is called PS3. I had thought maybe
this is what a microATX PSU was, but it seems that is a more generic
term for multiple PSU form factors. There is also an SFX and even a
TFX. So I seem to have found a unit from Sparkle that should work,
assuming I can trust the specs, FSP250-60SPV.