my old modem be a Linksys CM100 Docsis 2.0 I be have constant connection drop during peak time , so I buy this modem to see if a newer Docsis 3.0 modem would relieve that . I have not have a drop connection since hook it up . I also gain a small amount of speed use this . old modem get I 19mb down on avg and this one have I around 22-24 on avg . heat - with my old one I could set my toe on it and keep em warm in the winter , this one well vent and stay cool .