Does this board even support it? I want to be able to monitor fan speeds and, more importantly, temperatures, but I can't even get PSU voltage readouts.

It should do, I think. It's tough to find good specs for Aopen's older boards but hardware monitoring was a thing by this point. I have an Aopen MX6B-EZ and it can monitor voltages and temperatures. I don't recall seeing working fan speeds though.

I don't have my little Micro ATX system with the board all plugged in right now, but I got the utility from here: ftp://ftp.aopen.ru/pub/utility/hwmon/
From what I recall, the 'last' hardware monitor utility from around 2000 was able to read information from it "hwmon233.exe"

There are some clues here btw, the GL518 hardware monitor Aopen used was a rare one so only their utility supports it: https://www.anandtech.com/show/334/3

Thermalwrong wrote on 2020-06-05, 18:14:

It should do, I think. It's tough to find good specs for Aopen's older boards but hardware monitoring was a thing by this point. […]
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Does this board even support it? I want to be able to monitor fan speeds and, more importantly, temperatures, but I can't even get PSU voltage readouts.

It should do, I think. It's tough to find good specs for Aopen's older boards but hardware monitoring was a thing by this point. I have an Aopen MX6B-EZ and it can monitor voltages and temperatures. I don't recall seeing working fan speeds though.

I don't have my little Micro ATX system with the board all plugged in right now, but I got the utility from here: ftp://ftp.aopen.ru/pub/utility/hwmon/
From what I recall, the 'last' hardware monitor utility from around 2000 was able to read information from it "hwmon233.exe"

There are some clues here btw, the GL518 hardware monitor Aopen used was a rare one so only their utility supports it: https://www.anandtech.com/show/334/3

Aaaah that's awesome, thank you 😀

CPU fan speed and PSU voltages seem to be about as accurate as can be expected for the 90s, but temperature is waaaaaaay off.

With 18'c ambient, it's reporting a CPU temp of 24'c with a Pentium II 400 at 516 MHz and a 0.1v overvolt. I don't see that being even remotely possible /shrug