M35S and M35T1 Mobile Rack User's Guide
3-2
3-2 Front Connectors and Pin Defi nitions
Mobile rack
Main Power
4-Pin Connector
Pin# Defi nition
1
+12V
2 and 3
Ground
4
+5V
Activity LED Connector
Pin# Defi 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 defi 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 defi nitions.
Fan Connectors
Pin# Defi nition
1
Ground
2
+12V
3
Tachometer
4. - 8. SATA Ports
The SATA ports are used to connect the
SATA drive cables. The fi ve ports are des-
ignated Channel #1 - #4.
