A2000 ATX PSU Power Adapter Cable [ADAPSU010] > what about -5V ?

[RetroNinja]

For AmigaKit's power supply cable:

A2000 ATX PSU Power Adapter Cable for Amiga 2000
[ADAPSU010]

Does anyone know if the ATX power supply has to have a -5V line? Or, does this cable convert a spare +5V to -5V? Another way to say the same thing, is there any intelligence in this adapter or is it just a straight through cable converter?

[RetroNinja]

Huh, I was under the impression the A2000 needed for the -5V for the boot process. Thanks for the info.