Linksys DOCSIS 3.0 Cable Modem -lrb- dpc3008-cc -rrb-  Amazon Prime offer a competitive price -lrb- since increase -rrb- . the order arrive on time along with another Amazon order place later that arrive a day early . if you be a basic internet service consumer , you probably be not shop for a DOCSIS 3.0 cable modem . if you want the best `` bang for you buck '' and need fast internet access say for video on demand or online gaming , read on . bottom line , this Cisco dpc3800-cc cable modem work on my Comcast service . it do not operate at DOCSIS 3.0 speed . my quantifiable thru put be now more than double by replace a lease docsis 2 cable modem with this docsis 3 modem . the pay back be 12.2 month by eliminate the Comcast modem lease . my disappointment rest with Comcast , not this product . here be why . while the FCC want US isp to make 100 million bit per second -lrb- 100 mbp -rrb- download speed we national standard by 2020 , we be far from that standard in 2012 . a cable internet provider that implement the full feature set of the cable industry 's DOCSIS 3.0 standard could meet the FCC objective . but my service provider be not even close and have no incentive to do so . all we can do , as consumer foot the bill , be to be inform -lrb- search `` DOCSIS 3.0 '' -rrb- and purchase product that will work if the service level be provide . you need to understand that there be three variable to you quality of internet service : 1 -rrb- cooperative manufacturer \/ service provider relationship to assure proper `` provision '' or the ` hand shake ' between the hardware and the isp ; 2 -rrb- a isp willing to implement a supportive infrastructure ; and 3 -rrb- the isp service level and equipment you select to pay for . I choose the Cisco dpc3008-cc to address factor 1 and 3 and understand that Comcast be not now provide adequate service to my location to achieve service level this cable modem be design to provide . in other word , I can not downgrade the dpc3008 device due to my isp service , factor 2 ! I move from NW fl to SW Florida a few month ago in 2012 . with the same hardware -lrb- a docsis 2 Scientific Atlanta cable modem -rrb- , different cable provider -lrb- Cox & Comcast -rrb- I have 2x faster thru put with cox cable than I now have with Comcast with the same modem . a personal visit to Comcast 's local service office confirm yesterday that my location be not receive the highest speed Comcast offer here . in contrast , I receive better than advertise thru put from cox -lrb- try 32 mbp with the same docsis 2 device ! -rrb- . the installation be simple . the CD base user guide be not clear . yes , you can just attach the new cable modem to you cable without waste time to call technical support , assume you cable internet be operable . keep you work cable modem until you set up you new one . as per the user guide , simply connect the new modem and power it up . observe the light to confirm the new modem on you cable initiate you isp 's automatic provision . now , direct connect you computer to the modem , power cycle the modem and open you browser . you eventually will see a screen that request you account number and register phone number , maybe the last 4 digit of you ssno . after a reset , I be good to go . the last install step be to then connect you wire \/ wireless local area network . you can do this within 30 minute . after testing that , I drive to Comcast , turn in the lease cable modem and challenge they service level to no avail . I will edit this review later if I experience any issue specific to the Cisco dpc3008-cc . I conclude that the negative review here be from inexperienced user or perhaps a firmware or provision issue now correct by Comcast and Cisco . after 24 hour , it be still work and never reboot . if a user do not properly `` provision '' the new modem with the isp , it will exhibit the reboot symptom complain about here . I deduce that the Comcast recommend speed test site -lrb- speedtest.net -rrb- be optimize for my local Comcast service since its measure speed with two different cable modem be nearly twice that of a different site -lrb- speakeasy.net -rrb- . within 24 hour , I run 4 test of the two different site . with speedtest.net , my download \/ upload average speed be 15.4 \/ 6.2 mbit\/sec with the doci 2 device versus 28.4 \/ 5.3 with the Cisco DOCSIS DPC3800 . with speakeasy.net , the average be 7.0 \/ 6.0 before versus 28.4 \/ 4.0 with the Cisco modem . clearly , the Cisco DPC3008 DOCSIS 3 cable modem perform better than a Scientific Atlanta DOCSIS 2 cable modem . be the expect DOCSIS 3 speed attain ? NO. . if you read all the above , you understand that I hold Comcast accountable , not this device from Cisco . be I obtain the DOCSIS 3 benefit of 8\/4 dynamic channel bonding ? there be no way to tell , except my speed test suggest NO. . I do not now know if that be hardware or a isp issue . yes I be receive the DOCSIS 3.0 benefit of ipv6 and a gigabit Ethernet port . yes , the setup be easy . I choose the Cisco dpc3008 primarily due to its DOCSIS 3.0 certification and its acceptance as a approve device by Comcast . Comcast have few docsis 3.0 device on its approval list that be still market by the manufacturer for consumer purchase with the 8 \/ 4 channel bonding and ipv6 feature of DOCSIS 3 . the newer Cisco DPC3010 and newer device from several manufacture be not yet approve so I stick with the older dpc3008 . why Comcast seem to need 4 year to certify a device , six year after DOCSIS 3 be define be unfathomable . Cisco seem to have go the extra mile to assure its device be acceptable to Comcast , factor 1 above . this specific cable modem be my best available option today and it work .