IBM ServeRAID-4 Ultra160 Series User Reference page 24

Internal Channel 1
Internal Channel 2
External Channel 2
Battery for Backup Cache
External Channel 1
Figure 2. ServeRAID-4M and ServeRAID-4Mx controller
You can attach internal SCSI devices to the internal Channel 1 and Channel 2
connectors. You can attach external SCSI devices to the external Channel 1 and
Channel 2 connectors. The ServeRAID-4 controllers do not support configurations
that use both the internal and external connectors concurrently on the same
channel. For example, you cannot use both external Channel 1 and internal
Channel 1.
Note: The ServeRAID-4M and ServeRAID-4Mx controllers use the module (P/N
38L3386) containing a lithium battery.
Statement 2
CAUTION:
When replacing the lithium battery, use only IBM Part Number 33F8354 or an
equivalent type battery recommended by the manufacturer. If your system has a
module containing a lithium battery, replace it only with the same module type made
by the same manufacturer. The battery contains lithium and can explode if not
properly used, handled, or disposed of.
Do not:
v Throw or immerse into water.
v Heat to more than 100 C (212 F)
v Repair or disassemble
Dispose of the battery as required by local ordinances or regulations.
6
® ™
IBM User's Reference: ServeRAID -4 Ultra160 SCSI Controller