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April 6th, 2023 12:00
Latitude 5521, "Invalid Memory Installed" error
Latitude 5521
Hi everyone!
Today I've bought and tried to install a pair of Kingston KF432S20IB/32 DDR4 3200MT/s (64GB RAM total) to my Dell Latitude 5521. But it didn't start after the installation to my regret. The laptop was only blinking with 2,5 "Invalid Memory Installed" LED error and nothing more.
Could anyone provide me with additional information how to make them work together? According to the specification (https://www.dell.com/support/manuals/en-us/latitude-15-5521-laptop/lati_5521_ss/memory?guid=guid-e9d2ea83-38a4-431d-803c-96d63c1dbc34&lang=en-us) the laptop has to support up to 64GB of RAM, that's exactly my case.
Current BIOS version is 1.20.0, by the way.
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ejn63
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April 6th, 2023 13:00
There is no way to make that RAM work in your system -- the timing (cache latency) is too aggressive.
You need CL-22 RAM -- if you are buying Kingston, here's what you need:
https://www.kingston.com/en/memory/search/model/103499/dell-alienware-latitude-15-5521
Return the incompatible RAM and order that memory, which will work.
abalvl
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April 6th, 2023 22:00
ejn63, thank you for your reply.
Maybe you also know, if there is any information about compatible timings on Dell Support pages? I mean it would be much better if Dell as manufacturer provided this info about it's own laptops
abalvl
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April 7th, 2023 04:00
Here is not so many variants to buy where I'm living now. Kingston was the only well known brand across all the rest, and there was only this particular model of Kingston.
And yes, I had checked RAM specification (see my 1st message for the link) before I purchased it. Dell assumes that that information - slots, memory type, memory speed and memory configuration - is enough to make the rigth choise but it's not. There is no even a letter about supported cache latency, and that deceived me
ejn63
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April 7th, 2023 04:00
It's not up to the manufacturer of the system to support third-party hardware. If you order the RAM from Dell, it will work correctly.
The RAM you purchased is designed for high performance gaming systems -- not business notebooks. Did you check Kingston's configurator before buying, or just buy the RAM based on capacity and type, and not on specification?