User`s manual

SC747 Chassis Manual
D-8
D-10 Front Connectors and Pin Denitions
Mobile rack
Main Power
4-Pin Connector
Pin# Denition
1 +12V
2 and 3 Ground
4 +5V
Activity LED Connector
Pin# Denition
Act1/LED1 Channel 1
Act2/LED2 Channel 2
Act3/LED3 Channel 3
Act4/LED4 Channel 4
Act5/LED5 Channel 5
1. Mobile Rack Main Power Connectors
The 4-pin power connectors provide power to
the mobile rack. See the table on the right for
pin denitions.
2. Activity LED Connector
The activity LED connector, designated
JP26, is used to indicate the activity status
of each hard drive. For the activity LED
header to work properly, connect a SATA
LED cable.
3. Fan Connector
The 3-pin connectors, designated JP22,
provides power to the mobile rack fan. See
the table on the right for pin denitions.
Fan Connectors
Pin# Denition
1 Ground
2 +12V
3 Tachometer
4. - 8. SATA Ports
The SATA ports are used to connect the
SATA drive cables. The ve ports are des-
ignated Channel #1 - #4.