bfranchuk at jetnet.ab.ca
Fri Jun 25 09:24:31 CDT 2021
On 2021-06-25 2:48 a.m., Peter Corlett via cctalk wrote:
> USB-serial dongles tend to be a wretched experience for a couple of reasons.
> The first is at the electrical layer: USB only has 5V available and
> generating RICH CHUNKY VOLTS in such a small dongle is difficult and
> expensive, so doesn't happen, and the voltage swing might not be wide enough
> for older devices. The other is in the software layer: the standards are a
> mess and the full gamut of serial protocols are not available and/or not
> implemented properly.
Or if you change USB ports the serial COM# changes.
> The physical connector and pinout is an irrelevance in comparison. I own a
> soldering iron.
Well you can find mother boards with real COM port, but they are rare.
I just got a new system built, and mine has one hidden on it. No
connector for it however.
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