Hey i just did a mini mac in my one car, with the carnetix PS, works nice.

now i want to do a carputer in my rx7, i was looking at voompc, one comes with a M1 and one comes with a M2 PS.

my question is. will the 5 volt rail on either of these PSU's be sufficiant to power a

USB soundblaster audigy nx 2
Panasonic slot load dvd burner

if so, with how much reserve? enough to power a USB hub (i know it depends on what i run off it) but in general do-able?