Part 2 Technical Manual Of Motherboard162.2.2. Connectors and HeadersConnectors(1) Rear I/O Connectors*Refer to Page-3: Rear IO Panel Diagram.Icon Name Function12V DC-in PowerConnectorFor user to connect compatible poweradapter to provide power supply for thesystem.USB 2.0 Port To connect USB keyboard, mouse orother devices compatible with USBspecification.USB 3.0 PortTo connect USB keyboard, mouse orother devices compatible with USBspecification. USB 3.0 ports supportsup to 5Gbps data transfer rate.HDMI Port To connect display device that supportHDMI specification.RJ-45 LAN Port This connector is standard RJ-45 LANjack for Network connection.VGA Port To connect display device that supportVGA specification.RS232/422/485Serial PortMainly for user to connect externalMODEM or other devices that supportsSerial Communications Interface.Audio ConnectorsGREEN: Line-out ConnectorPINK : MIC Connector(2) COM1 (9-pin Block): RS232/422/485 Serial PortCOM1 port can function as RS232/422/485 serial port. In normal settingsCOM1 functions as RS232 port. With compatible COM cable COM1 canfunction as RS422 or RS 485 port.User also needs to go to BIOS to set ‘Transmission Mode Select’ for COM1(refer to Page 22) at first, before using specialized cable to connect differentpins of this port.