Asus AP1720-E2 AP1720-E2 English version manual - Page 100

9. Power connectors (24-pin ATXPWR1, 8-pin ATX12V1) These connectors connect to an SSI-type 12V power supply. The plugs from the power supply are designed to fit these connectors in only one orientation. Find the proper orientation and push down firmly until the connectors completely fit. 1. Do not forget to connect the 8-pin +12V power plug. Otherwise, the system does not boot up. 2. When using Intel® Xeon™ 800 MHz processor, make sure that your power supply can provide a total of 27A, minimum of three +12V output leads and at least 1A on the +5V standby lead (+5VSB). 3. The minimum recommended wattage is 600W. The system may become unstable or may not boot up if the power is inadequate. 24-pin power connector 8-pin power connector GND GND GND GND Ground +5V +5V +5V -5V Ground Ground Ground PSON# Ground -12V +3V 12V1 12V1 12V2 12V2 NCCH-DL ® +3V +12V3 +12V3 +5V Standby Power OK Ground +5V Ground +5V Ground +3V +3V NCCH-DL ATX power connectors For power supply with 20-pin power connector 10. Hard disk activity LED connector (2-pin IDELED1) This connector supplies power to the hard disk activity LED. The read or write activities of any device connected to the primary or secondary IDE connector cause this LED to light up. NCCH-DL ® IDE_LED NCCH-DL IDE activity LED TIP: If the case-mounted LED does not light up, try reversing the 2-pin plug. 4-12 Chapter 4: Motherboard info