I am not a DEC expert (they are not really common down
here in New Zealand)
so am relying on a lot of the info on the net. Everything I have read
suggests that 11/04's are in a BA11-L chassis with an H777 power supply (
http://www.brouhaha.com/~eric/retrocomputing/dec/pdp11/chassis.html). This
unit is in a BA11-K chassis with an H765 supply. Is this normal or is it
possible that the machine has been repackaged at some point in it's life?
It'sd less common, but it's not 'wrong'.
THe 11/04 and 11/34 could be found either in the BA11-L or BA11-K boxes.
The 11/04 was normally foudn i nthe smalelr box and the 11/34 in the
larger, but that is by no means always the case.
-tony