Asus Z9PE-D8 WS - Manual (Page 58)

2-36 Chapter 2: Hardware information
9. Serial ATA SCU connectors (7-pin SATA_SCU1-4 [black])
These connectors connect to Serial ATA 3.0 Gb/s hard disk drives and optical
disc drives via Serial ATA 3.0 Gb/s signal cables.
10. EATX power connectors
(24-pin EATXPWR1, 8-pin EATX12V1/EATX12V2)
These connectors are for an EATX 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.
• This motherboard supports EATX2.0 PSU or later version.
• Ensure that your power supply unit (PSU) can provide at least the minimum
power required by your system.