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Say goodbye to monthly rental fees — own your cable modem and get the Internet you deserve. Compatible with all major providers, the Linksys CM3008 8 x 4 Cable Modem delivers maximum WiFi speeds from existing ISP plans up to 100 Mbps*. Get the most out of your existing cable broadband connection and upgrade to stable, high-speed connectivity — ideal for streaming and surfing from eight download and four upload bonded channels. *100 Mbps represents the maximum throughput you can achieve with the Internet plan provided by your cable service provider. Actual throughput will be lower than 100 Mbps, as this throughput is dependent on your contract with your cable service provider.
  • Stable, high-speed connectivity ideal for streaming and web browsing
  • Compatible with all major cable providers
  • Eliminate monthly modem rental fees with Comcast Xfinity, Time Warner, Cox and Charter
  • Optimize your existing Internet connectivity with eight download and four upload bonded channels
  • Easy plug-and-play setup with three simple steps to faster speeds and maximum savings
  • Features high-performance Intel® Puma 5™ chipset so you can achieve high-speed downstream and upstream performance
  • Certified for DOCSIS 3.0 cable Internet standard
  • Able to handle high-bandwidth transfer rates over existing cable lines with speeds up to 343 Mbps*
*343 Mbps based on DOCSIS 3.0 throughput. Maximum speed varies depending on the service provided by the cable operator. IPv6 availability is dependent upon your ISP or service provider providing IPv6 capability.

Protection Agreements

One smart decision calls for another. Safeguard your new purchase with the best repair and replacement coverage in the business. A Sears Protection Agreement picks up where the limited manufacturer's warranty leaves off. Enjoy the peace of mind that comes from having a plan that delivers what it promises. (Learn More)
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Depth (in.) 4.88
Height (in.) 2.76
Width (in.) 0.97
General Features:
Additional Features DHCP support, auto-uplink (auto MDI/MDI-X), IPv6 support, Trivial File Transfer Protocol (TFTP) support, IPv4 support
Protocols/Specifications DOCSIS 2.0, DOCSIS 1.1, DOCSIS 3.0
Inputs & Outputs:
Inputs/Outputs Power, Coax, Gigabit Ethernet Port
Bus - Modem Gigabit Ethernet
Cables Included - Miscellaneous 1 x coaxial RF cable ¦ 1 x network cable
Compliant Standards - Miscellaneous UL, FCC, RoHS
Compliant Standards - Networking IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Connectivity Technology - Modem Wired
Depth - Dimensions & Weight 2.8 in
Device Type - General Cable modem
Form Factor - General External
Height - Dimensions & Weight 1 in
Included Accessories - Miscellaneous Power adapter
Interfaces - Expansion / Connectivity 1 x Cable - F connector ¦ 1 x 1000Base-T - RJ-45
Max Operating Temperature - Environmental Parameters 104 °F
Max Transfer Rate - Modem 343 Mbps
Min Operating Temperature - Environmental Parameters 32 °F
Multiplexed Channels Qty - Modem 8
Remote Management Protocol - Networking SNMP 1, SNMP 3, SNMP 2c
Weight - Dimensions & Weight 3.53 oz
Width - Dimensions & Weight 4.3 in
General Warranty Limited warranty - 1 year ¦ Technical support - 90 days
Product Includes:
Package Contents Linksys 8x4 Cable Modem, CM3008, Ethernet Cable, Power Adapter, Quick Start Guide
Color Black
Product Overview:
Firewall No
Line Coding Format 8 QAM, 32 QAM, 64 QAM, 256 QAM, QPSK, 16 QAM
Modem Type Cable Modems
Operating Humidity Range 10 - 90% (non-condensing)
Wireless Networking No wireless networking
Item Weight (lbs.) 0.53
Power & Performance:
Max Transfer Rate (Mbps) 100
Voltage DC 12 V

Product Documentation

Product Warranty - English

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Manufacturer's Warranty
1 year parts and labor
SearsOutlet Certified
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