NEC HX4500 manual Installing DIMMs

DIMMs

The memory board contains sixteen DIMM sockets arranged in four banks (see Figure 1-8). Each 168-pin socket can hold a single 72-bit DIMM module with 32MB, 64MB, 128MB, or 256MB of memory. When all sixteen sockets are populated, the memory board supports a maximum of 4GB of memory with 256MB DIMMs. DIMMs must be identical within a bank.

The first bank of DIMMs should be installed in sockets P02, P03, P04 and P05 (see Figure 4-7). When you install additional DIMMs, you must start with bank 2 and continue to bank 4. When you remove DIMMs, you must start with the highest populated bank of DIMMs.

The following provides procedures for configuring the memory in your system.

!WARNING

If the system was running, any processor and heat sink installed is hot. To avoid the possibility of a burn while configuring memory, let the components cool for 10 minutes before continuing with the procedures described here.

A

C

B

P17

P15

P13

P11

P09

P07

P05

P03

Bank

D

C

B

A

P16

P14

P12

P10

P08

P06

P04

P02

Figure 4-7. Inserting Memory DIMMs

Installing DIMMs

When properly installed, the DIMM module is oriented at an angle of 90 degrees relative to the memory board.

1.Power off the system and remove the left side panel as described earlier.

2.Remove the metal panel supporting the memory board. The support panel is secured to the chassis by two black fasteners. Release each fastener by slowly pulling it towards you (listen for two clicks). Grasp the left side of the support panel and swing it away from the chassis to remove it. Set the support panel aside for later installation.

Upgrading Your System 4-15