Arris/Motorola SB6121 DOCSIS 3.0 Cable Modem in Non-Retail Packaging (Brown Box)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> DOCSIS 3.0 certified， capable of up to 172 Mbps and upload speeds up to 131 Mbps based on Cable Internet Service Provider </span></li><li><span class="a-list-item"> Supports IPv4 and IPv6 networking， as well as Windows， Mac， and Linux computers </span></li><li><span class="a-list-item"> 10/100/1000Mbps Ethernet port to connect with router or computer </span></li><li><span class="a-list-item"> Requires Cable Internet Service. Compatible with major U.S. Cable Providers. Contact your ISP to confirm compatibility. Front-panel LEDs indicate status and simplify troubleshooting </span></li><li><span class="a-list-item"> Tips* • Reorient or relocate the receiving antenna. • Increase the separation between the device and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. . Consult the dealer or an experienced radio/TV technician for help. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41I3dWaED%2BL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41xMzGEXFTL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41nsKC2HiOL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51cYF6KWjfL.jpg" noproxy>