Which ATX are these?

Using the ATX Wiki as a guide and from what I can see from your pictures I'd say:

Picture 1

ATX12V 1.0 (or later but not 2.0) - Due to the 20pin and extra 4pin power connectors, although I don't recognise the one 6pin connector , but being Dell might be proprietary

Picture 2

ATX12V 2.0 (or later) - As after 2.0 the power supply is required to include a Serial ATA power cable, which are visible in the picture, and appears to have the 20pin + 4pin (24pin) power connector.

*EDIT*
Looking at the picture again appears to have a 6pin PCIe connector (if that's what the black 6 pin connector next to the 4pin power connector is) which would make Picture 2 ATX12V v2.1 as 2.0 didn't have the 6pin PCIe connector and 2.2 has an 8 pin PCIe connector.

All according to the Wiki.

*EDIT2*

The info sheet for the Coolermaster RP-500-PCAP (Picture 2) says its:

Compliance with the newest Intel standard ATX 12V V 2.01
That would be my best guess at answering your question.
 
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Using the ATX Wiki as a guide and from what I can see from your pictures I'd say:

Picture 1

ATX12V 1.0 (or later but not 2.0) - Due to the 20pin and extra 4pin power connectors, although I don't recognise the one 6pin connector , but being Dell might be proprietary

Picture 2

ATX12V 2.0 (or later) - As after 2.0 the power supply is required to include a Serial ATA power cable, which are visible in the picture, and appears to have the 20pin + 4pin (24pin) power connector.

*EDIT*
Looking at the picture again appears to have a 6pin PCIe connector (if that's what the black 6 pin connector next to the 4pin power connector is) which would make Picture 2 ATX12V v2.1 as 2.0 didn't have the 6pin PCIe connector and 2.2 has an 8 pin PCIe connector.

All according to the Wiki.

*EDIT2*

The info sheet for the Coolermaster RP-500-PCAP (Picture 2) says its:


That would be my best guess at answering your question.

Awsome, thank you very much!
 
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