The SB4200 is a DOCSIS 1.1 device. »www.cablemodem.com/specifications/ gives the specs of DOCSIS and it appears that the speed promised by OOL is achievable with DOCSIS 1.1. Of course 2.0 is better and backwards compatible so even people with 1.1 devices will probably see speed improvement.
SB 3100 = DOCSIS 1.0 max of 3.0 Gbps down 512kbps up SB 4100 = DOCSIS 1.1 max of 15 Gbps down 1.5Mbps up SB 5100/5120 = DOCSIS 2.0 max of 30 Gbps down 3.0Mbps up SB XXXX = DOCSIS 3.0 max of 150 Gbps down 15.0 up due out in 2007 according to Motorola. WAY ahead of comcast! The whitepaper did not address caps or burst speeds.
