Supermicro SC815 series - Front Connector and Pin Definitions

B-5
Appendix B: BPN-SAS-815TQ Backplane Specications
B-4
SC815 Chassis Manual
4. MG9071 Chip
The MG9071 is an enclosure management
chip that supports the SES-2 controller and
SES-2 protocols.
B-6 Front Connector and Pin Denitions
3. - 4. JTAG Connector and Upgrade Con-
nector
The JTAG connector, designated JP47, and
the upgrade connector, designated JP46,
are diagnostic purposes. These connectors
should be used by a certied and experienced
technician.
Backplane
Main Power
4-Pin Connector
Pin# Denition
1 +12V
2 and 3 Ground
4 +5V
1. Backplane Main Power Connectors
The 4-pin connectors, designated JP10 provide
power to the backplane. See the table on the
right for pin denitions.
2. CD-ROM/Floppy 4-Pin Connectors
The 4-pin connectors, designated J9 and J10,
provide power to the CD-ROM and floppy
drives. See the table on the right for pin de-
nitions.
CD-ROM/
FDD Power
4-Pin Connector
Pin# Denition
1 +5V
2 and 3 Ground
4 +12V
6. Sideband Headers
The sideband headers are designated JP51.
For SES-2 to work properly, you must connect
an 8-pin sideband cable. See the table to the
right for pin denitions.
Sideband Headers
Pin # Denition Pin # Denition
2 Backplane
Addressing
(SB5)
1 Controller
ID (SB6)
4 Reset (SB4) 3 GND (SB2)
6 GND (SB3) 5 SDA (SB1)
8 Backplane
ID (SB7)
7 SCL (SB0)
10 No Connec-
tion
9 No Connec-
tion
7. I
2
C Connectors
The I
2
C Connectors, designated JP44, are
used to monitor HDD activity and status. See
the table on the right for pin denitions.
I
2
C Connector
Pin Denitions
Pin# Denition
1 Data
2 Ground
3 Clock
4 No Connection
SAS Activity LED Header
Pin Denitions
Pin # Denition Pin # Denition
1 ACT IN#0 6 ACT IN#4
2 ACT IN#1 7 ACT IN#5
3 ACT IN#2 8 ACT IN#6
4 ACT IN#3 9 ACT IN#7
5 Ground 10 Empty
8. Activity LED Header
The activity LED header, designated JP26,
is used to indicate the activity status of each
SAS drive. For the Activity LED Header to work
properly, connect using a 10-pin LED cable.
9. - 12. SAS Ports
The SAS ports are used to connect the SAS
drive cables. The four ports are designated
#0 - #4. Each port is also compatible with
SATA drives.