The vendor specs for a Lenovo Flex 3 1580 say it supports up to 8GB of RAM. There are some forum threads that say the D3CN35WW BIOS update supports up to 16GB, but the vendor spec hasn’t been updated so it’s chancy. I finally decided to chance it – I’ve got a few Docker VMs that I use for development, a Citrix published app that I need to access, and I like to have a dozen tabs open in Firefox. All of this means that I regularly run out of memory.

I ordered a 16GB module from Amazon, installed it … and

It works!