Thomas Tornblom wrote:
I have just bought an old HP Color LaserJet 4500 printer, and I would like
to add a duplexer, to be able to do dual sided printing.

There are several C4083A duplexers on Ebay, but on the ones with
photos I see that they are marked "100-127V 50/60Hz". We use 230V
50Hz, and I wonder if anyone knows if it would be reasonable to modify
it for 230V? I would prefer not having to run a transformer.

Thomas


I'd be surprised if the power supply lacked an internal jumper if not an
externally accessible switch to for 120/240V. Even if you had to use a
transformer, the duplexer shouldn't draw much power so it wouldn't
require a very large one.