[no subject]

Internally, they use a different motherboard and I/O card.  The
positioning of the edge connector for the I/O board changed, so it is
not possible to mismatch the I/O board and motherboard (without causing
physical damage to both).

The Lisa 2/5 I/O card is the same as that of the Lisa 1, except for the
floppy controller firmware.

> The 2/10 is actually the same as a Macintosh XL, so Matthew is correct
> is he's referring specifically to the 2/10. Both the 2/10 model and
> the Macintosh XL have a 1.8 amp power supply (mine has a 1.2 amp PS).

The Lisa 2/10 and Mac XL need the 1.8A power supply to have enough power
for the internal Widget drive.

> And, the 2/10 and the Mac XL have a 10GB widget hard disk drive (mine
> has a 5MB Profile externally).

Although it didn't ship as a product, there were prototypes of an
internal Profile 5 MB drive.  This had the same mechanism and electronics
as the external Profile, except for the power supply, but was packaged
to fit internally just like the later Widget 10 MB drive.  I don't think
many escaped into the wild; I've got one but I've never seen another.

I've previously heard the claims that some Macintosh XL machines did not
have the screen mod, but that certainly wasn't my experience at the
time.  The first Macintosh XL machines that arrived at the local
stores did in fact have the screen mod factory installed.