power levels are fine.
link an ethernet cable from the port rear of the SuperHub closest to the white cable to your desktop/laptop ethernet then stick the Superhub into modem mode. once all is loaded run speedtests via .net and bt's speedtest. also try a few file downloads >
www.thinkbroadband.com/download.html
remember your on 10meg so the allowance isnt much if you download alot, surf, play games etc. youll bound to get capped/traffic managed