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B-8 Cisco 2500 Series Access Server User Guide

Installing Primary-Memory DRAM SIMMs

Tools and Equipment Required

The following lists the tools required to remove and replace the DRAM SIMMs on the

access server:

• Medium-size ﬂat-blade screwdriver (1/4 inch [0.625 cm])

• ESD-preventive wrist strap

• The appropriate DRAM SIMM for your access server model

Primary Memory Conﬁgurations

You can upgrade to 4- or 16-MB DRAM; the 4-MB upgrade kit includes one 1 MB x 36

DRAM SIMM, and the 16 MB kit includes one 4 MB x 36 DRAM SIMM. As primary

memory is expanded to 4- or 16-MB SIMMs, the 2 MB of permanent memory is allocated

as shared memory.

DRAM SIMM Installation

Following is the procedure for installing DRAM SIMMs:

Step 1 Turn OFF power but, to channel ESD voltages to ground, do not unplug the power

cord.

Step 2 Attach an ESD-preventive wrist strap.

Step 3 Open the cover according to the procedure in the section “Opening the Chassis”

earlier in this appendix.

Step 4 Turn the chassis so the system card is opposite the position shown in Figure B-2,

with the primary-memory DRAM SIMM socket toward you.

Step 5 Remove the existing DRAM SIMM by pulling outward on the connectors to

unlatch them, as shown in Figure B-5. Be careful not to break the holders on the

SIMM connector.

Caution To prevent damage, do not press on the center of the SIMMs. Handle each SIMM

carefully.

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Cisco 2511 - Router - EN Betriebsanweisung Seite 122