Nearly all consumer motherboards that use PCI slots are 5V.
Actually both.
I must be some kind of standard: the anonymous gangbanger of the 21st century.
There's a difference between signalling voltage and supply voltage. The key indicates the signalling voltage, not necessarily which supply voltages are present on the PCI slot.
A PCI 2.1 slot keyed for 3.3V signalling has to have both supply voltages present. A PCI 2.1 slot keyed for 5V signalling is heavily encouraged to have both supply voltages present but only required to supply +5Vcc.
This is easy to identify with a POST card. Mine has a red LED that lights up to indicate whether +3.3V is present. Super easy.
Kahenraz wrote on 2021-10-09, 14:55:This is easy to identify with a POST card. Mine has a red LED that lights up to indicate whether +3.3V is present. Super easy.
👍
Interesting.
Cheers,
Great Northern aka Canada.
