B-4
SC825M(B) Chassis Manual
Backplane
Main Power
4-Pin Connector
Pin# Definition
1
+12V
2 and 3
Ground
4
+5V
B-5 Rear Connector and Pin Definitions
3. - 4. DVD-ROM 4-Pin Connectors
The 4-pin connectors, designated J9 and J10,
provide power to the DVD-ROM drive. See
the table on the right for pin definitions.
CD-ROM/
FDD Power
4-Pin Connector
Pin# Definition
1
+12V
2 and 3
Ground
4
+5V
5. MG9071 Chip
The MG9071 is an enclosure management
chip used in the BPN-SAS-825MTQ back-
plane.
2. Sideband Connector
The sideband connector is designated JP51.
For SES-2 to work properly, you must connect
an 8-pin sideband cable to JP51. See the table
to the right for pin definitions.
Sideband Connector
Pin # Definition Pin # Definition
2
SDataIn
(SGPIO
Data In)
1
N/C
4
SDataIn
(SGPIO
Data Out)
3
GND
6
GND
5
SLoad
(SGPIO
Load)
8
N/C
7
SClock
(SGPIO
Clock)
1. Main Power Connector
The 4-pin connector, designated JP10, pro-
vides power to the backplane. See the table
on the right for pin definitions.
Summary of Contents for SC825M Series
Page 12: ...SC825M B Chassis Manual 1 4 Notes ...
Page 32: ...2 20 SC825MB Chassis Manual Notes ...
Page 62: ...SC825M B Chassis Manual 5 24 Notes ...
Page 72: ...SC825M B Chassis Manual 6 10 Notes ...
Page 74: ...SC825M B Chassis Manual A 2 Notes ...