Asus RS161-E4 PA2 User Guide - Page 59

8. Serial port connector (10-1 pin COM2) This connector is for a serial (COM) port. Connect the serial port module cable to this connector, then install the module to a slot opening at the back of the system chassis. R KFN4-DRE COM2 PIN 1 KFN4-DRE COM Port Connector 9. ATX power connectors (24-pin ATXPWR1, 8-pin ATX12V1) These connectors are for an ATX power supply plugs. The power supply plugs are designed to fit these connectors in only one orientation. Find the proper orientation and push down firmly until the connectors completely fit. • Do not forget to connect the 8-pin ATX +12 V power plug; otherwise, the system will not boot. • Use of a PSU with a higher power output is recommended when configuring a system with more power-consuming devices. The system may become unstable or may not boot up if the power is inadequate. • Make sure that your power supply unit (PSU) can provide at least the minimum power required by your system. See the table below for details. ATXPWR1 ATX12V1 +3 Volts +3 Volts Ground +5 Volts Ground +5 Volts Ground Power OK +5V Standby +12 Volts +12 Volts +3 Volts GND GND GND GND R KFN4-DRE +12V DC +12V DC +12V DC +12V DC +3 Volts -12 Volts Ground PSON# Ground Ground Ground -5 Volts +5 Volts +5 Volts +5 Volts Ground KFN4-DRE ATX Power Connector ASUS RS161-E4/PA2 4-13