6-3
Chapter 6: CB3 JBOD Control Board
Component and Connector Definitions
1. BMC Chip
The Baseboard Management Controller (BMC) chip monitors the physical state
of a system and provides communication with the system administrator through
an independent connection.
2. I
2
C Connectors
These connectors (JP1-JP4) accept cables for up to four SAS2/SAS3 backplanes
that carry management data between the the backplane and the control board.
3 and 4. Manufacturing Test Connectors
Connectors J3 and FB1 are for Supermicro manufacturing use only.
5. BMC LAN LED Header
This connector is designated JP6 and is
used to connect to the LED indicators on
the chassis using cable CBL-NTWK-0584
or CBL-NTWK-0587.
8. Control Panel Connector
This connector is designated JF1 and
connects to the control panel on the
chassis. See Chapter 3 for additional
control panel information.
Power Button
Blue+ (OH/Fan Fail/
PWR FaiL/UID LED)
1
NIC1 Link
Reset Button
2
Power Fail LED
HDD LED
FP PWRLED
Reset
PWR
3V3
ID_UID_SW/3/3V Stby
Red+ (Blue LED Cathode)
Ground
Ground
19
20
X
Ground
NMI
X
NIC2 Link
NIC2 Activity
NIC1 Activity
3V3
UID
Ground
Ground
Ground
Link
Act
2 1
6. BMC LAN Connector
The baseboard management controller (BMC) LAN connector is designated J8
and supports connectivity with a local network using cable CBL-NTWK-0584 or
CBL-NTWK-0587.
7. SC847D SAS2 I
2
C Connectors
(Used for SC847D only) The backplane connectors, designated J4-J7, accept
internal cables to connect to up to four SC847D expanders.
