Asus PS4 - Manual (Page 62)

4-14 Chapter 4: Motherboard information
13. SSI power connectors
(24-pin SSIPWR1, 8-pin SSI12V1, 8-pin SSI12V2)
These connectors are for the SSI power supply plugs. The power supply
plugs are designed to fit these connectors in only one orientation. Find the
proper orientation and push down firmly until the connectors completely fit.
• DO NOT forget to connect the 24+8+8-pin power plugs; otherwise, the
system will not boot up.
• Use of a PSU with a higher power output is recommended when configuring
a system with more power-consuming devices. The system may become
unstable or may not boot up if the power is inadequate.
• Ensure that your power supply unit (PSU) can provide at least the minimum
power required by your system.