This is great if you are renting a modem. Return the one you have now and stop paying extra. I got this from a friend, who no longer has cable internet and it works fine. I plugged it in, the computer recognized it, but since it wasn't registered w/ Adelphia I couldn't do much.
$25 OBO + Shipping. Postal Money Order or Check only.
This modem is DOCSIS compatible. Doesn't include 12VDC power pack (somehow I lost it). Connects through Ethernet only (doesn't have USB port). Pictures at