Upon some quick googling I found that your laptop has DDR3L-PC3L-12800-1600MHz-SODIMM memory. It states you have one slot of memory and could upgrade it to 8GB. I'd suggest Tiger Direct or Frye's online for a deal. eBay is spotty on buying RAM.
A quick YouTube search will get you a "how to" on performing the operation. It's about a 2 on the difficulty scale of 1-10.
Heres the link I found the info on.
https://www.memorystock.com/memory/...e Laptop has 1 slot,per slot for your Laptop.
I have a Lenovo Ideapad 320 that has a lowly 4GB of RAM.
Can this model of laptop be upgraded with larger memory?
The crucial memory scanner will show you what your options are, and what memory is compatible.
You can buy for less $$ elsewhere.
https://www.crucial.com/store/systemscanner