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Ncch-dl ide activity led, Ide_led, Ncch-dl atx power connectors – Asus AP1720-E2 User Manual

Page 100

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Chapter 4: Motherboard info

4-12

9. Power connectors (24-pin ATXPWR1, 8-pin ATX12V1)

These connectors connect to an SSI-type 12V power supply. The plugs
from the power supply are designed to fit these connectors in only one
orientation. Find the proper orientation and push down firmly until the
connectors completely fit.

1. Do not forget to connect the 8-pin +12V power plug. Otherwise, the

system does not boot up.

2. When using Intel

®

Xeon™ 800 MHz processor, make sure that your

power supply can provide a total of 27A, minimum of three +12V
output leads and at least 1A on the +5V standby lead (+5VSB).

3. The minimum recommended wattage is 600W. The system may

become unstable or may not boot up if the power is inadequate.

10. Hard disk activity LED connector (2-pin IDELED1)

This connector supplies power to the hard disk activity LED. The read
or write activities of any device connected to the primary or secondary
IDE connector cause this LED to light up.

NCCH-DL

®

NCCH-DL IDE activity LED

TIP: If the case-mounted LED does not
light up, try reversing the 2-pin plug.

IDE_LED

NCCH-DL

®

NCCH-DL ATX power connectors

For power supply

with 20-pin

power connector

24-pin power connector

8-pin power connector

+3V

+3V

Ground

+5V

+5V

Ground

Ground

Power OK

+5V Standby

+12V3

-5V

+5V

+3V

-12V

Ground

Ground

Ground

PSON#

Ground

+5V

+12V3

+3V

+5V

Ground

GND

12V2

GND

12V2

GND

12V1

GND

12V1