User`s guide

Mainboard Connectors

Connectors are used to attach devices to the mainboard.

Attached devices can be internal like hard disk indicator lights,

or external like serial and parallel ports. The most commonly

used connectors are shown in the Mainboard Diagram. A

detailed description is provided in the table below.

Table 1. - Mainboard Connectors

J1 Keyboard Keyboard connection

PS1 Power Power supply input

J2 Parallel Parallel printer port

J3 COM2 Communications port B (DB25/COM 2)

J4 COM1 Communications port A (DB9/COM 1)

J5 Floppy drive Floppy disk drive connector

J6 Primary hard drive Primary IDE hard drive connector

J7 Secondary hard drive Secondary IDE hard drive connection

J8 SCSI SCSI device connector

J9 RESET Reset switch input

J10 SLEEP Low Power “Sleep Mode” LED output

J11 KBDLOCK Keyboard lock input

J12 SPEAKER Speaker output

J13 HDD LED Hard drive LED output

PS2 PCI Power Future PCI Power supply connection

Connector Description

Chapter 2 - The Mainboard