Staples offers the Motorola SURFboard DOCSIS 3.0 Broadband Cable Modem, model no. SB6121, for $69.99. Coupon code "43779" cuts it to $59.99. With free shipping, that's the lowest total price we could find by $10, although we saw it for $5 less a month ago. It features upstream and downstream channels, support for IPv4 and IPv6, and enhanced network management. This modem may not be compatible with all service providers. Deal ends September 2.