SUPER MICRO Computer Super PIIIDME Secondary Power Connector, Power LED, Hard Drive LED

Note: Be sure to use a 6-

Chapter 2: Installation

2-6 Connecting Cables (see previous page for JF1

	connection locations)
Power Supply Connector	Table 2-1
	ATX Power Supply Connector
	Pin Definitions (J27)

After you have securely mounted the motherboard, memory and add-on cards, you are ready to connect the cables. Attach an ATX power supply cable to J27 by aligning the tabs on both connec- tors. See Table 2-1 for the pin definitions of an ATX power sup- ply.

Secondary Power Connector

Pin Number Definition		Pin Number Definition
1	3.3V	11	3.3V
2	3.3V3	12	-12 V
3	G r o u n d	13	G r o u n d
4	5 V	14	P S - O N
5	G r o u n d	15	G r o u n d
6	5 V	16	G r o u n d
7	G r o u n d	17	G r o u n d
8	P W - O K	18	-5V
9	5 V S B	19	5 V
10	1 2 V	20	5 V

Table 2-2

Secondary Power Connector

(PWR_ SEC)

Installation

Use of the Secondary Power con- nector (PWR _ SEC) is recom - mended when a heavy load of pe- ripherals has been added to the motherboard.

pin connector and check the power supply lay-

out before attaching it. See Table 2-2

for pin definitions.

Pin
Number	Definition

1G r o u n d

2G r o u n d

3G r o u n d

4+3.3V

5+3.3V

6+5V (keyed)

Power LED

The Power LED connection is lo- cated on pins 1, 3 and 5 of JF1. See Table 2-6 for pin definitions.

Hard Drive LED

The Hard Drive LED connection is located on pins 7 and 9 of JF1. Attach the hard drive LED cable to these pins to display disk activity. See Table 2-5 for pin definitions.

Table 2-3

PWR_LED Pin

Definitions (JF1)

Pin
N u m b e r	Definition
1	+ 5 V
3	K e y
5	G N D

Table 2-4

IDE_LED Pin

Definitions

(JF1)

Pin
N u m b e r	Definition
7	+ 5 V
9	HD Active

2-7