I purchased this SB6120 after much research, but decided to install PRIOR to purchasing the new fast multicore Intel 99x Extreme Edition processor computer to TEST whether my previously SLOWER internet REALLY was my computer as Comcast was saying. Have been paying for 12MB download speed from Comcast, but not getting even 4 MB down and less than 1Mb/s up. SO . . . . Installed this new Modem SB6120 on this old Pentium4 computer (minimum processor required by Motorola). Easy install. About 15-20 mins on phone w/ Comcast. Modem does take a few minutes to "warm up" so to speak, but big deal if speed is faster. WAS IT? YOU BET. Without changing anything else other than replacing the rented Comcast modem to this DOC SIS 3 modem, my internet speed down MORE THAN DOUBLED and my upload speed quadtrupled. Of course, that's from a slow speed to start before installing this modem. And this is on 9 year old computer equipment. Ran speed tests on 3 different sites, 3 different times each. So . . . it's NOT just the computer that has been the problem all along -- as Comcast kept saying. IT IS the cable modem that made the difference in my new speeds here.
Can't say that the increase in speed is JUST due to this particular Motorola product per say, rather it's probably the upgrade to the DOC SIS 3 protocol that is on this modem. A few other DOC SIS 3 modems are also available, but none with as good of reviews as this one. Now CAN'T WAIT TO get my new computer to see if it increases more. Might even pay Comcast for the 20Mb/s speed after that since this modem can easily handle that. ONE'S INTERNET SPEED will be limited by multiple factors and one of the most important factors is the speed you're paying for from Comcast (or other provider). STILL I'm paying for the 12Mb/s download speed from Comcast, and this am, this new SB6120 registered in (on 3 sites) as 19Mb/s down and using bonded channels and on my "old" pentium 4 processor computer. I'm pleased. CONS
1. No place to register on Motorola -- KEEP your Receipt for 2 yr warranty as some people report the unit dies after 6 months. Also buy ONLY from an "authorized" reseller of Motorola (like Walmart) OTHERWISE Motorola will NOT warranty the product at all. See literature you get with product.
2. Don't like the Motorola website -- not very user friendly, but does have good documentation online for the user manual. Manual also on the disk sent with product.
3. One user on another review site complained about the brighness of the LINK light. Thought she must be the picky type, BUT now that I've installed the unit, she has a point. Wouldn't recommend this on your desktop right next to your monitor. Link light does blink constantly (showing data being moved) and it is very bright. Would be annoying at eye level. Fortunately mine is up on a desk shell ~ 3' above my line of sight.
4. THIS POWER CORD could be longer. Could NOT place my modem on the upper R of my desk with cord to left side of desk on floor. Had to put up on Left -- tight fit -- too short! Otherwise -- great unit so far. We'll see if it holds up based on others complaints. AS USUAL -- THE BEST PRICE WAS HERE AT WALMART AND WITH FREE SHIP TO HOME. WALMART ROCKS!
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