Acer PCI to Ultra SCSI RAID Controllers DAC960PG - Manual (Page 34)

Installation
A-2 DAC960PG and DAC960PJ Installation Guide
Installation
Tools Needed
The only tool needed for the installation is a small, flat-blade screwdriver.
Procedure
1. If the DAC960PG or DAC960PJ is not already removed from the
system, power down the system and then remove the DAC960PG or
DAC960PJ.
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WARNING
Disconnect the system from the electrical wall
outlet before opening the system cabinet. Working
with the system covers off and power applied to the
system can result in shock and serious injury.
2. Remove the loopback plug from J5 on the DAC960PG or DAC960PJ.
Keep the loopback plug in a safe place, in case the BBU needs to be
removed at a later time.