IBM Redbooks ServeRAID-MR10M, User Manual

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3-2 ServeRAID-MR10M SAS/SATA Controller Characteristics
Figure 3.1 Card Layout for the ServeRAID-MR10M RAID Controller
Table 3.1 ServeRAID-MR10R SAS/SATA Controller – Connectors
Connector Description Type Comments
J1 Battery Backup
connector
20-pin
connector
Provides the interface to the bat-
tery backup unit. The iBBU
connects directly to the ServeRAID-
MR10M controller.
J2 Universal
Asynchronous
Receiver/Transmitter
debugging
4-pin
connector
Reserved for IBM
®
use.
Note: This connector uses 3.3V
LVTTL levels and will be
damaged if connected to
standard transceiver levels.
J5 BIOS Disable 2-pin
connector
Reserved for IBM use.
J6 Board Default
Debug
2-pin
connector
Reserved for IBM use.
J7 Cache Write Pend-
ing LED
2-pin
connector
The connector for the enclosure
LED. It provides a signal that indi-
cates when the on-board cache
contains data and a write from the
cache to the drives is pend-ing.
Optional.
J13 Global Drive Activity
header
2-pin
connector
Indicates activity on the drives.
Operates at approximately 10mA at
3.3V.
85021-00
J2
J13 J7
J1
J5
J23
J6
J21
J20