That one is missing 4pin eps. Most motherboards need both 24pin and 4pin atx. That one is just 20+4.
Are you sure it's an expansion to 24-pin ATX power and not a 4-pin EPS? I'm running a cheap Aliexpress knock-off of one of these in a low-powered build I have, and it has a 20-pin + a 4-pin EPS (and works just fine, despite the ATX connector on the motherboard being 24-pin).
Also, there's this accessory: