Picked the wrong PSU

From intel.com the datasheet on the mobo that I got it says:
2.7.2.1 Power Supply Connectors
The board has three power supply connectors:
• Main power – a 2 x 12 connector. The board requires a power supply with a 2 x 12 main
power cable.
• Processor power – This connector provides power directly to the processor voltage regulator
and must always be used. Depending on manufacturing options, the board will contain either a
2 x 4 or a 2 x 2 connector for the processor voltage regulator.
• Auxiliary PCI Express graphics power – a 1 x 4 connector. This connector provides the
required additional power when using high power (75 W or greater) add-in cards in either or
both the Secondary PCI Express x16 (electrical x8) and the PCI Express x16 (electrical x4) bus
add-in card connectors.
CAUTION
Regardless of the connector type (2 x 4 or a 2 x 2), the Processor power connector must always be
used. Failure to do so will prevent the board from booting.
If the board is equipped with a 2 x 4 power connector, you must use a power supply with a dualrail
2 x 4 Processor power cable. Failure to do so may cause damage to the board.

So on the old motherboards the processor power has always been on a 2x2 plug (12 volt rails) but on this new one, processor power is a 4x2 plug. I didn't know anything about no 4x2 plug, the PSU has a 2x4 but the above says plugging in 2x2 into a 2x4 could damage the board.