■Motherboard/riser board
DIMM slot
Insert a memory module.
The slots are placed in the order of DIMM1 and DIMM2 from the right.
CPU
JP3 jumper switch 
Set whether to enable the password.
Internal battery
The battery is used to store the setup of the PC. The life span of the battery is about five years under normal use condition (8 hours per day). If the upper cover of the PC main unit is left removed, the internal battery life will shorten. Keep the duration when the upper cover is left removed at minimum requirement such as only for installing internal options.
: Position of pin 1
Expansion slot
Insert various option cards to extend the functions of the PC.
The slots are placed in the order of ISA1 (half), ISA2 (full), PCI1 (full), and PCI2 (full) from the right.
Primary IDE connector
Connect the hard disk for starting the operating system.
Secondary IDE connector
Floppy disk drive connector
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