2-3
Chapter 2: Connectors and Pin Definitions
2-3 Front Jumper Locations and Pin Definitions
Figure 2-2. Front Jumpers
Explanation of Jumpers
To modify the operation of the backplane,
jumpers can be used to choose between
optional settings. Jumpers create shorts
between two pins to change the function
of the connector. Pin 1 is identified with
a square solder pad on the printed circuit
board.
Note: On two pin jumpers, "Closed" means
the jumper is on and "Open" means the
jumper is off the pins.
Connector
Pins
Jumper
Setting
3 2 1
3 2 1
Other Jumper Settings
Jumper
Jumper Settings
Notes
J29
Open: Default
This is used for internal testing only.
ACTLED
Open: Default
This is used for internal testing only.
ACTLED
J29
J26
J27
Jumper Settings for NVMe Drives
J26
J27
CPU1
CPU2
Notes
2-3
2-3
8
12
2-3
1-2
10
10
Default setting
1-2
2-3
12
8
1-2
1-2
N/A
N/A