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1.5.3 Motherboard layout
1.5.4 Layout contents
Connectors/Jumpers/Slots/LED Page Connectors/Jumpers/Slots/LED Page
1. CPU, power, and chassis fan connectors
(4-pin CPU_FAN, 3-pin PWR_FAN, and 3-pin CHA_FAN)
1-28 9. Chassis intrusion connector
(4-1 pin CHASSIS)
1-21
2. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)
1-22 10. Clear RTC RAM (3-pin CLRTC) 1-18
3. CPU Socket AM2+
1-8 11. Onboard LED (SB_PWR) 1-5
4. DDR2 DIMM slots
1-11 12. SATA connectors (7-pin SATA1, SATA2,
SATA3, SATA5, SATA6)
1-24
5. LPT connector (26-1 pin LPT)
1-23 13. USB connectors (10-1 pin USB78, USB910,
USB1112)
1-26
6. Serial port connector (10-1 pin COM1)
1-24 14. Digital audio connector (4-1 pin SPDIF_OUT) 1-27
7. IDE connector (40-1 pin PRI_IDE)
1-23 15. Front panel audio connector (10-1 pin AAFP) 1-27
8. System panel connector (20-8 pin PANEL)
1-25 16. Optical drive audio connector (4-pin CD) 1-26
ASUS M4A78-EM 1-7