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A+ SERVER 2042G-72RF4 USER'S MANUAL
SAS Battery Backup Connector
A SAS battery backup connector (JS3)
provides power backup support for cache
data of onboard SAS devices during a power
outage. Cache data can be retained for up
to 48-hours. See the table on the right for
pin definitions.
SAS Battery Backup Connector
Pin Definitions (JS3)
Pin# Definition Pin# Definition
2
INPLACE2
1
INPLACE1
4
BBSTATUS
_3V3
3
Data
6
Ground
5
Ground
8
PFAIL_N
7
PWRGD
_P1V5
10
BBE_3V3
9
Ground
12
BBSTROBE
_3V3
11
Data
14
Ground
13
Data
16
BBU_SMDA
_3V3
15
Ground
18
Ground
17
Data
20
BBU_SMBCL
_3V3
19
Ground
Summary of Contents for 2042G-72RF4
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