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1.2
Motherboard overview
1.2.1
Motherboard layout
Place six screws into the holes indicated by circles to secure the motherboard to the
chassis. DO NOT overtighten the screws! Doing so can damage the motherboard.
Ensure that you install the motherboard into the chassis in the correct orientation. The edge
with external ports goes to the rear part of the chassis.
1.2.2
Layout contents
Connectors/Jumpers/Slots/LED
Page Connectors/Jumpers/Slots/LED
Page
1. Keyboard power (3-pin KBPWR)
1-7
10. Chassis intrusion connector (4-1 pin CHASSIS)
1-14
2. HDSW setting (30-pin HDSW)
1-8
11. Serial ATA connectors (7-pin SATA1-4)
1-11
3. USB device wake-up (3-pin USBPW1-4,
3-pin USBPW5-8)
1-8
12. System panel connector (10-1 pin F_PANEL)
1-16
4. ATX power connectors (24-pin EATXPWR,
4-pin ATX12V)
1-15
13. USB connectors (10-1 pin USB56, USB78)
1-13
5. Power, CPU, and chassis fan connectors (3-pin
PWR_FAN, 4-pin CPU_FAN, 3-pin CHA_FAN)
1-14 14. Clear RTC RAM (3-pin CLRTC)
1-7
6. CPU Socket AM2+
1-3
15. Digital audio connector (4-1 pin SPDIF_OUT)
1-11
7. DDR2 DIMM slots
1-3
16. Front panel audio connector (10-1 pin AAFP)
1-13
8. IDE connector (40-1 pin PRI_IDE)
1-12 17. PCI / PCIe x16 slots
1-6
9. Onboard LED (SB_PWR)
1-1
18. Serial port connector (10-1 pin COM1)
1-15
Place this side towards
the rear of the chassis.
1-2
ASUS M4A78-VM IN/SI
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