MSI K9N User Guide - Page 26

Important Notification about Power Issue

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Hardware Setup Important Notification about Power Issue NForce chipset is very sensitive to ESD (Electrostatic Discharge), therefore this issue mostly happens while the users intensively swap memory modules under S5 (power-off) states, and the power code is plugged while installing modules. Due to several pins are very sensitive to ESD, so this kind of memory-replacement actions might cause system chipset unable to boot. Please follow the following solution to avoid this situation. Unplug the AC power cable (shown in figure 1) or unplug the ATX2 & JPW 1 power connectors (shown in figure 2 & figure 3) before the 1st installation or during system upgrade procedure. Figure 1: Unplug the AC power cable Figure 2: Unplug the ATX2 power conn. Figure 3: Unplug the JPW1 power conn. 2-9

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2-9
Hardware Setup
Important Notification about Power Issue
NForce chipset is very sensitive to ESD (Electrostatic Discharge), therefore this
issue mostly happens while the users intensively swap memory modules under S5
(power-off) states, and the power code is plugged while installing modules. Due to
several pins are very sensitive to ESD, so this kind of memory-replacement actions
might cause system chipset unable to boot. Please follow the following solution to
avoid this situation.
Unplug the AC power cable (shown in figure 1) or unplug the ATX2 & JPW1 power
connectors (shown in figure 2 & figure 3) before the 1st installation or during system
upgrade procedure.
Figure 1:
Unplug the AC power cable
Figure 2:
Unplug the ATX2 power conn.
Figure 3:
Unplug the JPW1 power conn.