Question about Microsoft RCA CABLE INTERNET MODEM MODLE DCM305R (11603538)

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Cable Modem Speed

I have an RCA DCM 305R Cable Modem, and I wondered how to find out if the cable modem will support Comcast's new download speeds of 12MB. And, if not what should I replace it with?

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Hey freind how r u

Posted on Mar 19, 2008

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Yea certainly it will support as it has a WAN throughput: 38 Mbps however the download speed will fluxtuate from 9 mb to 11 mb......u wont have exactly 12 mb download speed/....oki

Posted on Aug 25, 2007


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1 Answer

Will this work with Comcast broadband and Windows 7?

This modem will work with Comcast High Speed Internet.
You will have to contact Motorola for drivers for the Windows 7.

It does matter how fast your internet speed is,anything faster than 20meg,will need a Docsis 3.0 modem.

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The Motorola SB5120 SURFboard® is a very popular, solid and reliable cable modem compatible with most cable providers. If your modem is two years or older, upgrading to the SB5120 has been known to show speed improvements up to 3X faster than older DOCSIS 1.0 modems. Set up is simple and fast.
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D-Link DCM-202
D-Link's DCM-202 Cable Modem is powered by TurboDOX™ bandwidth acceleration software increasing your download speeds up to 20 times. The DCM-202 makes your broadband connection more efficient and effective by clearing network congestion, resulting in a boost in download speeds. With the DCM-202, you will get more out of your broadband connection with increased bandwidth and enhanced performance.
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Dec 12, 2010 | Computers & Internet

1 Answer

Comcast is my service provider and I have had an RCA DCM 245R modem for almost 10 years. Until recently it has worked fine. On an ever increasing basis I am losing internet connection and when I look at...


It can be an issue with the modem or with the line. When the line drops the link then the modem shows only two lights. And, when you power cycle the modem (unplug and replug it) it establish the session again with the comcast.

So, i'll suggest you to get the line checked first and if comcast finds that line is working fine then get the modem replaced.


Aug 15, 2010 | Thomson RCA DCM245R Modem

1 Answer

Reseting "Bridge mode" in RCA DCM 305R cabel modem

you can't set teh modem to bridge mode, however, you can set the router to bridge.
The linksys should have bridge mode configuration in the uer guide.

connected the 2 router together
configure the IP address of the liksys to be inthe same subnet as the moem, but out of the range of the DHCP of the modem. ie. DHCP address through, the linksys should have the IP address as
disable the DHCP on the linksys
setup the wirless just the way you would if ti was the modem.
connect from the modem LAN port to the LAN port on thelinksys. leave the WAN port open.

Dec 30, 2008 | RCA Thomson Digital Cable Modem (DCM305R)

1 Answer

Is my modem a WiFi router?

This RCA DCM 425 is a cable modem only its not even a router, its just a plain cable modem that is being provided by some cable company like Cox and Comcast, try searching again for a different box there they have a brnad name of Linksys, Netgear or Dlink because those are the common manufacturer of wireless router ...

Hope that helps............


1 Answer

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Try resetting the modem whenever you change between those PC's some NIC's will hang a cable modem stuck on an address.


1 Answer

RCA DCM 425C Modem USB driver

I got a different modem from Comcast....a Motorola. Then I got a Belkin USB network adapter. You can plug in an ethernet cable into the Belkin and plug the other end into the computer USB input. This works well for older laptops that have no ethernet input. Then you call Comcast and they configure it over the phone and Viola! It works. So if you have an older laptop like I have, get a Belkin F5D5055 Gigabit USB 2.0 Network Adapter. Plug it in to your USB input and then plug in the enthernet cable from Comcast. Hope this helps someone.

Feb 18, 2008 | Computers & Internet

1 Answer

Rca cable modem...

This one is for a DCM 315, it should be pretty close and might work.

Jun 20, 2007 | RCA Cable Modem DCM315R (11603540)

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