Biostar U8668 Grand User Manual page 3

4-10. ATX 12V Power Connector: JATXPWR2 
4-11. 5V / 5VSB Selection for USB: JUSBV3 
4-12. 5V / 5VSB Selection for USB: JUSBV4 
5. RAM Module Configuration  
5-1. DDR SDRAM 
5-2 SDRAM
5-3. How to install DDR/SDRAM DIMM Module
6. Peripheral Port Features 
6-1. PS/2 Mouse / Keyboard Connector: JKBMS1
6-2. USB & LAN Port Connectors: JUSBLAN1
6-3. Serial and Parallel Interface Ports
6-4. Game (Joystick/MIDI) Port Connector: JAUD_GAME
6-5. Audio Port Connectors: JSPKR1/JLIN1/JMIC1 
6-6. Audio Subsystem