CyberSURFR (no, that is not a typo) is a family of external cable modems manufactured by Motorola.

Key features include:
Physical Specifications:
  • Dimensions of 1.7" x 6.8" x 10"
  • Weighs 1.8lbs
  • The front panel indicators are (in order from left to right): Power, Cable, PC, RD (Receive Data), TD (Transmit Data)
  • Will operate at temperatures ranging from 0 C (+32 F) to +40 C (+104 F)

Connectors:
  • F connector (cable)
  • EIA/TIA 574 DB 9-pin male connector (external analog modem)
  • 10BaseT PC/hub connector (network)
  • DIN connector (DC power)

It should also be noted that this is currently the modem of choice for my ISP (ShawCable) and probably many others.

Source: http://ecc400.com/motorola/wavespec.htm
Also check out http://www.motorola.com/EHS/environment/products/products.html