SMC Networks D3CM1604 Modem (DOCSIS 3.0, 16x4 Channel Bonding) Approved for Time Warner Cable, Charter, Cox, Spectrum 16 downstream and 4 upstream channels allows for blazing speeds! Ideal for streaming HD Video and gaming on multiple devices at a time DOCSIS 3.0 cable modem equipped with a 16x4 bonding capable of speeds in excess of 640 Mbps downstream and 120 Mbps upstream. CableLabs DOCSIS 3.0 certified