Asus PCH-DL User Manual - Page 19

2.1 Before you proceed Take note of the following precautions before you install motherboard components or change any motherboard settings. 1. Unplug the power cord from the wall socket before touching any component. 2. Use a grounded wrist strap or touch a safely grounded object or to a metal object, such as the power supply case, before handling components to avoid damaging them due to static electricity. 3. Hold components by the edges to avoid touching the ICs on them. 4. Whenever you uninstall any component, place it on a grounded antistatic pad or in the bag that came with the component. 5. Before you install or remove any component, ensure that the ATX power supply is switched off or the power cord is detached from the power supply. Failure to do so may cause severe damage to the motherboard, peripherals, and/or components. When lit, the green LED (SB_PWR1) indicates that the system is ON, in sleep mode, or in soft-off mode, a reminder that you should shut down the system and unplug the power cable before removing or plugging in any motherboard component. This warning LED (LED1) lights up if you installed two CPUs of different type/voltage. You must install identical CPUs on this motherboard. The red LED (AGP_WARN1) is a smart protection from motherboard burn out caused by an incorrect AGP card. If you plug in any 3.3V AGP card into the 1.5V AGP slot, this LED lights up thus preventing the system to power up. This LED remains off if you plug in a 1.5V AGP card. AGP_WARN1 ON Incorrect AGP Card OFF Correct AGP Card LED1 PCH-DL PCH-DL Onboard LED ON OFF CPU Type/Voltage CPU Type/Voltage not identical identical SB_PWR1 ON Standby Power OFF Powered Off ASUS PCH-DL Deluxe motherboard 2-1