I had to look all this up about a month ago. He is what I found:
ATX -> 20 pin
ATX12V -> 20 pin ATX & 4 pin +12V
EPS12V -> 24 pin (ATX + +12V)
BTX -> 24 pin
The ATX12V 20 pin and 4 pin connectors can be plugged in together into
an EPS12V motherboard socket.
BTX is not compatible with EPS.
Topher Fischer wrote:
I have a dual Athlon MP motherboard (a Tyan Thunder K7X Pro) and an EPS
power supply. The motherboard has an EPS 12V 24-pin connector and an
EPS 12V 8-pin connector. The power supply has an EPS 12V 24-pin, EPS
12V 8-pin, and an ATX 12V 4-pin. My problem is that the 8-pin cable
from the power supply doesn't quite reach the connector on the
motherboard, but the 4-pin does. I can plug the 4-pin cable into one
side of the 8-pin connector and it can power up. My question is, what
exactly is the 8-pin connector for? What are the benefits of using the
EPS over the ATX? Also, anybody know a good place to get an extender
cable for the 8-pin?
Thanks in advance,
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