Adaptec 131U2 - AAA RAID Controller, Installation And Hardware Manual, Page: 17 / 82

2-3
Installing the Hardware
Installing DIMM Memory
Before you can use the AAA-131U2/133U2, the DIMM memory
socket must be populated with a DIMM, as shown in Figure 2-3.
In most cases, the AAA-131U2/133U2 comes pre-installed with a
DIMM. If a DIMM is not pre-installed, a 168-pin EDO 3.3v 60ns or
faster DIMM can be used. (See the Adaptec Web Site at
http://www.adaptec.com/raid for a list of approved DIMMs
and vendors.)
Figure 2-3. Installing DIMM in the DIMM Memory Socket
168-pin DIMM
DIMM Socket