Lenovo ThinkPad X1 13.3" Intel i5 320GB Notebook

I noticed the memory was 4GB DDR3. What is the capacity for expansion?

Wondering the same thing. Or if anyone has the exact model number so I can check.

I’m thinking that this X1 is the same X1 from 2011. Not an X1 Carbon, but one with the great keyboard. On the PSREF sheets for X1 (1286 - 1294) it says “8GB is maximum memory for Lenovo installed only, and 4GB is maximum memory when
customer installed using 4GB PC3-10600 DDR3 L-H SODIMM 55Y3711.”
[If you search for “Lenovo PSREF417”, you will find this sheet.]