MSI K9N2GM User Guide - Page 30
Front USB Connector: JUSB1/ JUSB2, Serial Port Connector: JCOM1
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MS-7508 Mainboard Front USB Connector: JUSB1/ JUSB2 This connector, compliant with Intel® I/O Connectivity Design Guide, is ideal for connecting high-speed USB interface peripherals such as USB HDD, digital cameras, MP3 players, printers, modems and the like. 10 9 21 JUSB1 / 2 Pin Definition PIN SIGNAL 1 VCC 3 USB0- 5 USB0+ 7 GND 9 Key (no pin) PIN SIGNAL 2 VCC 4 USB1- 6 USB1+ 8 GND 10 NC Important Note that the pins of VCC and GND must be connected correctly to avoid possible damage. Serial Port Connector: JCOM1 This connector is a 16550A high speed communication port that sends/receives 16 bytes FIFOs. You can attach a serial device. 1 2 9 JCOM1 Pin Definition PIN SIGNAL 1 DCD 2 SIN 3 SOUT 4 DTR 5 GND 6 DSR 7 RTS 8 CTS 9 RI DESCRIPTION Data Carry Detect Serial In or Receive Data Serial Out or Transmit Data Data Terminal Ready Ground Data Set Ready Request To Send Clear To Send Ring Indicate 2-16