Higher numbers are generally faster, but note that V.42 has nothing to do with speed. The 33,600 bps and x2 modems do not have V-dot numbers yet. When choosing a modem, call us and see what modem we recommend. We talk to people with modem trouble every day and know which are reliable. If you are buying a used modem, do not buy anything slower than 28,400 bps.
Modems come in various shapes and sizes.
The disadvantage to this modem is that if the modem hangs you must turn off your computer to reset it. The unit connects to your cable tv box instead of your phone line. Not available in the area at this time. External modems can work on almost any computer that has a serial port. I get a lot of questions about this.