On Saturday, November 15, 2003, at 08:09 PM, [EMAIL PROTECTED] wrote:
Ray Fryer wrote at 15:37 -0500 on 11/15/03 about ADB powered 28/33k modems
>I was wondering if anyone recalls how well these 28/33k ADB powered >modems perform. The only one I ever had was the 2.4k model. It's >just being used for someone with casual internet use on a 7200. >Actually, in some case, certain people cannot seem to get a faster >speed than 28k.
All these modems do is draw on the voltage that is available for adb peripherals above the standard mouse and keyboard. All communication functions travel through the regular serial ports.
Apple claims that the adb port will power three items, and, iirc, has about 500 milliamps of current available for accessories. Since mice and keyboards draw very little power, there is plenty left over to power a modem instead of using a power brick. That was actually one of these modems big selling points- no brick needed and one less wire behind your desk. In fact, if you have access to the pin out power specs for adb ports, you could get a third party brick of the correct ratings and attach it to the correct pins on the modem's adb cable and have no problems powering the modem from a brick instead of the adb port.
I have had a couple of the Supra's that attached to the adb port that worked just as well as power bricked Global Village modems under the same line conditions.
HTH Len
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