HP Elitebook 8540p: what RAM 2x2gb and 2x4gb chips order must be installed in HP Elitebook 8540p

Currently there are modules of 2x2gb RAM installed in the primary slots under the keyboard in my Elitebook 8540 P.

I want to add RAM.

If I get 1x4Go RAM module, can I just add it into the expansion slot #1 on the underside of the laptop? If I get 2 x 4 GB RAM modules, I add them in the expansion slot on the underside of the laptop, or I swap the new modules of RAM 2 x 4 GB 2x2gb modules under the keyboard into the primary slots?

Hello:

I recommend you to read Chapter 4 of the manual on the link below... page 60 & 68.

Computers that use the card mother with the spare part number 595765-001 or 630294-001 have four memory locations.

On these computers, in both locations of memory expansion (at the bottom of the)

computer) and memory locations main (under the keyboard), slot 2 cannot be occupied if slot 1 is not met.

http://h20566.www2.HP.com/hpsc/doc/public/display?sp4ts.Oid=4096175&docid=emr_na-c03382696&docLocale=en_US

If your laptop has 2 x 2 GB memory in the slots of the upper (primary), you will need to put the corresponding memory in the lower expansion slots.

In other words, you put two 4 GB chips into the bottom slots 2.

It should not at all important if you switch the chips (put the 2 x 2 x 2 GB and 4 GB in the top slots in the slots on the bottom).

The reason of memory must be installed in pairs GB is so it can operate in DDR mode.

So, if you only buy a 4 GB chip in a first time, put it in the #1 expansion slot.

Make sure you get memory low density on this model or memory will not work.

Normally, low density memory modules are those with 8 tokens of some memory black on each side of the circuit board.

Tags: Notebooks

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