31
Appendix A: BPN-SAS3-826EL1-N4 Backplane
A
1
E
5
H
5
1
A
E
H
A
C
A
C
1
7
25
26
50
51
75
76
100
1
3
1
3
BPN-SAS3-826EL1-N4
REV:1.00
SAS CODE
A
C
A
C
A
C
A
C
+
+
+
+
3
2
1
4
3
2
1
4
1
4
1
4
1
4
1
4
1
4
6
7
8
9
13
12
22
A1 A2
A7
A8
CG
1
CG
2
B1
B2
B7
B8
C1
C2
C7
C8
D1
D2
D7
D8
CG
3
E1
E2
G2
F2
F1
H2
H1
G1
F7
F8
G8
E7
G7
H7
H8
E8
PRESS FIT
A1
A2
A7
A8
CG
1
CG
2
B1
B2
B7
B8
C1
C2
C7
C8
D1
D2
D7
D8
CG
3
E1
E2
G2
F2
F1
H2
H1
G1
F7
F8
G8
E7
G7
H7
H8
E8
PRESS FIT
A1
A2
A7
A8
CG
1
CG
2
B1
B2
B7
B8
C1
C2
C7
C8
D1
D2
D7
D8
CG
3
E1
E2
G2
F2
F1
H2
H1
G1
F7
F8
G8
E7
G7
H7
H8
E8
PRESS FIT
A1 A2
A7
A8
CG
1
CG
2
B1
B2
B7
B8
C1
C2
C7
C8
D1
D2
D7
D8
CG
3
E1
E2
G2
F2
F1
H2
H1
G1
F7
F8
G8
E7
G7
H7
H8
E8
PRESS FIT
1
5
10
15
20
25
26
AF
AE
Y
R
K
E
A
1
2
3
1
2
3
1
DESIGNED IN USA
BAR CODE
67
12
13
24
7
12
24
U136
R399
Q43
L2
D32
D31
JP2
J24
J23
L3
Q17
L1
LED29
LED27
LED26
LED25
L29
C188
C19
4
C192
C193
J21
J20
U22
J22
J18
JPW2
JPW1
JPW3
U11
OSC1
U143
U19
U14
U13
U16
U3
C7
C6
C206
C205
C186
C187
J15
J14
J16
J17
MH7
MH6
MH9
MH8
MH5
MH1
MH2
MH3
U9
U30
U7
JP1
U26
R44
R400
R1
08
R97
R1
10
R183
R182
C30
C17
C486
C485
C14
CPU2
0
3
2
1
: 2
: 3
: 1
: 4
CPU1
J24
2-3
2-3
1-2
1-2
1-2
1-2
2-3
2-3
J23
NVM
e4
NVM
e3
NVMe2
NVM
e1
CPLD
SAS P1
SAS P3
SAS P2
SAS P4
I2C#4
UART
12V
5V
HB-LED
SDB
I2C#0
TEST
ACT-LED
JP1
JP24
JP1
JP23
A.6 Rear Jumper Locations and Pin Definitions
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
Jumper Settings
Jumper
Settings
Note
JP1
Pins 1-2
Activity LED test jumper,
designated ACT-LED TEST
JP23, JP24 see table below
NVMe mapping to CPU
Jumpers
NVMe to CPU
Connection
NVMe Cables
J23
Pins
J24
Pins
NVMe Drive Slots
VPP
from
CPU1
VPP from
CPU2
2-3
2-3
NVMe# 1-4 connected to
CPU 1
:4
0
2-3
1-2
NVMe# 1-3 connected to
CPU 1
NVMe# 4 connected to CPU
2
:1
3
1-2
2-3
NVMe# 1-2 connected to
CPU 1
NVMe# 3-4 connected to
CPU 2
:2
2
1-2
1-2
NVMe# 1 connected to CPU
1
NVMe# 2-4 connected to
CPU 2
:3
1
Figure A-2. Rear Jumpers