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-12v line on modern PSUs is VERY low output. First random PSU I just looked at was 800mA. Second was only 500mA. And these are older PSUs. Since -12v is rarely used now, the outputs have been dropping off.And remember, when you start putting a load close to the max rated output, the voltage may drop somewhat.Do not rely on the -12v line for power! It's OK for small loads, but even a small fan may overload it.
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