Think your cable connection's fast? Arris thinks it could be a lot faster. At today's NCTA Cable Show in Chicago, the company will demo a new system that can support download speeds of 4.5Gbps, and upload rates of 575Mbps. To achieve this, Arris devoted more of its DOCSIS 3.0 cable channels to broadband (128 downstream, 24 upstream), sourced through a C4 cable module (pictured on the left). Of course, this would leave less space for conventional TV channels, but we're guessing ...