xiii4.3.3 Fixed Disk Drives ..................................................................... 4-54.3.4 Enhanced IDE Features............................................................ 4-54.3.5 Num Lock After Boot ................................................................ 4-54.3.6 Memory Test ............................................................................ 4-64.3.7 Math Coprocessor..................................................................... 4-64.4 Advanced System Configuration ........................................................... 4-74.4.1 Power Management Mode ........................................................ 4-74.4.2 Battery-low Warning Beep ........................................................ 4-94.4.3 Standby/Suspend Upon Battery-low.......................................... 4-94.4.4 Password Check During Resume.............................................. 4-94.4.5 Display Device........................................................................ 4-104.4.6 LCD Expand Mode ................................................................. 4-114.5 System Security .................................................................................. 4-134.5.1 Floppy Disk Drive Control ....................................................... 4-144.5.2 Hard Disk Drive Control .......................................................... 4-144.5.3 System Boot Drive Control ..................................................... 4-154.5.4 Serial Port Base Address ........................................................ 4-154.5.5 Parallel Port Base Address ..................................................... 4-164.5.6 Parallel Port Operation Mode.................................................. 4-164.5.7 Passwords .............................................................................. 4-174.6 Load Setup Default Settings................................................................ 4-18