love , Love , Love this modem ! have a family who be all tech geek ... lol . okay maybe that be extreme . : -rrb- I buy this after the Comcast rep say they upgrade to docsis 3.0 and that this may assist with boost we speed . I have the blast package with comcast . the modem be easy to set up but call comcast to activate the modem be a ordeal ... the tech seem slightly confuse . \*\* as a previous reviewer state keep the box , you will need the customer number from the box to activate the modem with comcast . once install and activate the first 68 hour be slow go mean we speed drop dramatically 4.5 download , 2 upload by the end of the first night we be at 17 download and 3 upload . by the next day it be back to we normal speed 20 down and 4 up . it have now be roughly a week and now we speed be ; 33 + Downloads and 4.42 upload and this have be test from we Laptops not a desktop computer so there may be some lag still there base on we older linksy router which will be be upgrade soon . my point be the upload time may be upward to 40 + download speed for a desktop computer and may possibly reach these speed through a update router for laptop or through a desktop computer be connect directly to the modem itself . I be excite with the result and the speed boost . we currently have 4-5 laptop , tv , Roku , 2 Wii , PS3 connect to at any give time and it work great . \*\*\* Upgrade you router also : the only exception be access netflix via the tv and roku player ... it take a while to load the image thus be the reason to make sure you upgrade you router and it will resolve this . the image not load quickly be only due to the router and nothing to do with this modem itself ... just fyus . I have my eye on the Linksys\/Cisco 3500 or 4500 . : -rrb-