which power cable and USB cable for my Innous Zenith Mk3?

had a chance to grab a used  Zenith MK3 at a crazy good price

this thing kind of looks and feels cheapish  but no worries, not unexpected and did not buy it to look good in a rack

Im getting the impression it would benefit from a good power cord and USB cable 

would like to keep each under $500 

any recommendations from Zenith owners would be appreciated