Hi,

No, the cable cannot be used with all Seasonic power supplies.

However, according to official information from Seasonic, you can use the cable for your power supply.

https://seasonic.com/de...

It says:

Seasonic FOCUS Plus Gold & Platinum - 650 Watt and higher

Have a nice Sunday and a good start to the week.

It definitely fits on yours, occupies 2 GPU slots on the power supply.