Easy to setup especially if you be replace a exist cable modem . since I use Comcast and be use a older Motorola SB5100 series , I unplug the exist cable and just plug it into the new modem . all that be leave to get it setup be to call Comcast and tell they I buy a new modem and would be return the old rental . they need the modem 's MAC address which take approximately 5 minute and I be up and run . I have this near my home theater setup and notice the indicator light be very bright . you might need to turn the modem away or cover the light to dim the brightness . as for download and upload speed , I be see sustained 21 + mbps\/3 .7 mbp respectively . prior to the upgrade , it be about 18-19Mbps \/ 3.4 mbp . so not bad performance but better . my only other gripe be the price . just realize Costco have the sb6120 model for about $ 70 . if I have stop by earlier I would have buy it there and save some money since performance be about the same .