Hi guys,

Lenovo ThinkPad X240 - 12.5' - Core i5 4300U - 4 GB RAM - 128 GB SSD overview and full product specs on CNET. Discuss: Lenovo ThinkPad X240 - 12.5' - Core i5 4300U - 4 GB RAM. If your Lenovo ThinkPad X240 memory upgrade fails at anytime–we will ship a replacement same day. We support your Lenovo ThinkPad X240 memory purchase long after the sale. Meet the increasing demands of your applications with more Lenovo ThinkPad X240 memory.

I got a few questions regarding upgrade of my X240. I learnt that X240 has 2 slots for M.2 SSD. One is occupied by a 16GB SSD cache drive (this is what I find in my device manager) and the other is for WIFI card. I wanna replace the 16G SSD with a new SSD as windows drive, keep the HDD and upgrade to 8GB ram as 16GB is not supported.

Lenovo Thinkpad X240 Ram Upgrade

My questions are:
1. Is it any 2242 m.2 SSD with be OK? Which model is crecommended? 128GB or 256GB?

Lenovo Thinkpad X240 Memory Slots Downloads

Lenovo Thinkpad X240 Memory Slots 1tb

2. Some said the slot is for cache drive only. Is it really OK use it for windows drive?