User`s guide

MegaRUM II PCI Motherboard User’s Guide

Step 8 Attach Cables, Continued

JP17 Reset Switch Connector JP17 is a two-pin berg that is attached via a

cable to an externally-mounted reset switch. When the

reset switch is pressed, the system performs a hard reset.

Pin 2 is ground and Pin 1 is Hard Reset.

JP20 Speaker Connector JP20 is a four-pin single-inline berg that is

optionally attached via a cable to a standard speaker.

AMIBIOS signals hardware problems through the

speaker.

Pin Description

1 VCC

2 N/C

3 N/C

4 Data out

JP15 BIOS Chip Voltage Select JP15 is a 3-pin single-inline berg which

lets you choose the BIOS chip VPP voltage.

Pin Description

Short pin 1-2 VPP = 12V (default)

Short pin 2-3 VPP = 5V

Cont’d