Trying to find power supply for external CD burner

Hello everyone,

I am trying to find a power supply for the HP CD Writer Plus 7500e
external CD burner which I inherited. I've located the exact
replacement on HP's web site. However, they want $66 + $14 for
a cable to plug it in. I'm hoping that I can find something cheaper.

The requirements for the CD burner are stated as +5V DC, 1.2A,
+12V DC, 0.8A. I've found some devices which say (e.g.) +5V 1A
or something like that. Would that work? How wide of the mark
can it go without damaging the CD burner?

I'm guessing that this kind of a power supply has to be a
common part for many consumer electronics gadgets. However,
I can't seem to locate the exact thing. Most of the hits I
get for "power supply" are much larger (say 50--100W).
What's the best way to go about finding a suitable substitute
for HP's exact replacement? Is there a certain keyword I
should add to the description?

I know this is pretty simple-minded. Thanks for any info.

Robert Dodier