AFL-HM55 Series Panel PCPage V3.9.3 Clear CMOS Jumper........................................................................................ 273.9.4 COM1 Pin 9 Setting ......................................................................................... 283.9.5 COM3 TX Function Select Jumper .................................................................. 303.9.6 COM3 RS-232/422/485 Jumper....................................................................... 313.9.6.1 COM3 RS-422 and RS-485 Pinouts ......................................................... 323.9.7 COM3 RS Function Select Jumper .................................................................. 333.9.8 ME Debug Mode Jumper ................................................................................. 343.9.9 iTPM Setting Jumper ....................................................................................... 353.9.10 ME RTC Select Jumper.................................................................................. 363.9.11 SPI Setting Jumper ......................................................................................... 373.10 M OUNTING THE SYSTEM ........................................................................................ 383.10.1 Wall Mounting................................................................................................ 383.10.2 Panel Mounting.............................................................................................. 413.10.3 Arm Mounting ................................................................................................ 443.10.4 Cabinet and Rack Installation (15-inch and 17-inch models only) ............... 453.11 BOTTOM PANEL CONNECTORS ................................................................................ 463.11.1 LAN Connection ............................................................................................. 463.11.2 Serial Device Connection............................................................................... 463.11.3 USB Device Connection ................................................................................. 473.11.4 VGA Monitor Connection............................................................................... 483.12 AT/ATX M ODE SELECTION .................................................................................... 493.12.1 AT Power Mode.............................................................................................. 503.12.2 ATX Power Mode ........................................................................................... 504 SYSTEM MAINTENANCE ....................................................................................... 514.1 SYSTEM M AINTENANCE I NTRODUCTION .................................................................. 524.2 ANTI - STATIC PRECAUTIONS ...................................................................................... 524.3 TURN OFF THE POWER .............................................................................................. 534.4 REPLACING COMPONENTS ........................................................................................ 534.4.1 Memory Module Replacement ......................................................................... 534.4.2 SATA DOM Card Replacement ........................................................................ 564.4.3 HDD Card Replacement .................................................................................. 565 BIOS SETUP ................................................................................................................ 575.1 I NTRODUCTION ......................................................................................................... 58