Asus PRIME B250M-PLUS Motherboard Pin Definition.English - Page 7

5. Single USB 2.0 connector (5-1 pin) This connector is for a USB 2.0 port. Connect the USB module cable to this connector, then install the module to a slot opening at the back of the system chassis. This USB connector complies with USB 2.0 specifications and supports up to 480Mbps connection speed. USBE5 +5V DC Data(negative) Data(positive) Groud PIN 1 6. A TX power connectors (24-pin EATXPWR, 8-pin EATX12V, 4-pin EATX12V) These connectors are for 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. PIN 1 GND GND ATX12V +12V DC +12V DC EATX12V EATXPWR +12V DC +12V DC +12V DC +12V DC +3 Volts +12 Volts +12 Volts +5V Standby Power OK GND PIN 1 +5 Volts GND +5 Volts GND +3 Volts +3 Volts PIN 1 GND +5 Volts +5 Volts +5 Volts -5 Volts GND GND GND PSON# GND -12 Volts +3 Volts GND GND GND GND • For a fully configured system, we recommend that you use a power supply unit (PSU) that complies with ATX 12 V Specification 2.0 (or later version) and provides a minimum power of 350 W. • DO NOT forget to connect the 4-pin/8-pin ATX +12V power plug. Otherwise, the system will not boot up. • We recommend that you use a PSU with higher power output when configuring a system with more power-consuming devices or when you intend to install additional devices. The system may become unstable or may not boot up if the power is inadequate. • If you are uncertain about the minimum power supply requirement for your system, refer to the Recommended Power Supply Wattage Calculator at http://support.asus. com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us for details. 7. Speaker connector (4-pin SPEAKER) The 4-pin connector is for the chassis-mounted system warning speaker. The speaker allows you hear system beeps and warnings. SPEAKER +5V GND GND Speaker Out PIN 1 Motherboard Pin Definition 1-7