Asus A8N-SLI A8N-SLI English edition user's manual, version E1815b - Page 27

2.1 Before you proceed Take note of the following precautions before you install motherboard components or change any motherboard settings. • Make sure that your power supply unit (PSU) can provide at least the minimum power required by your system. See "8. ATX power connectors" on page 2-24 for details. • Unplug the power cord from the wall socket before touching any component. • 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 • Hold components by the edges to avoid touching the ICs on them. • Whenever you uninstall any component, place it on a grounded antistatic pad or in the bag that came with the component. • Before you install or remove any component, ensure that the ATX power supply is switched off or the p o w e r c o r d i s d e t a c h e d f r o m t h e p o w e r s u p p l y . Failure to do so may cause severe damage to the motherboard, peripherals, and/or components. Onboard LEDs The motherboard comes with a green standby power LED that lights up to indicate that the system is ON, in sleep mode, or in soft-off mode. This is a reminder that you should shut down the system and unplug the power cable before removing or plugging in any motherboard component. The red warning LED lights up when you installed two graphics card but did not connect the ASUS EZ Plug™. The illustration below shows the location of the onboard LEDs. SLI_WARN_LED A8N-SLI ® A8N-SLI Onboard LED ON When use 2 Graphics but do not plug EZ-PLUG OFF When use 2 Graphics but do plug EZ-PLUG SB_PWR ON Standby Power OFF Powered Off ASUS A8N-SLI 2-1