PSUs are general universally compatible, as long as it's ATX 2.0 or higher. That PSU will work fine but if its something you thinking of purchasing there are probably better choices for the money.
ATX 2.2 is just the revision of the ATX spec that particular PSU conforms too. Intel has had to make several additions and compensations for the ridiculous power consumption of the Pentium 4 over the years.