Hi!
Any graphics card with a PCI Express connection (regardless if it’s a 2.0 or 3.0 port - these are interchangeable, the only difference is the speed of the connection, however the difference is not noticeable, unless you get a high-end GPU like a 1080(Ti) or 1070). The limit is given by the fairly weak power supply in the computer.
You would recommend something like a 1050 or a 1050Ti is the best you could get, just make sure to measure the space you have available. To be sure just get one of the smaller-sized (mini) cards, like these (these are almost guaranteed to work):
* [https://amzn.to/2AdSVEP|1050Ti (Mini)]
* [https://amzn.to/2GQHWXE|1050 (Mini)]
A [https://amzn.to/2V8q7GM|1030 (Mini)] would also work, but the cost difference between it and a better performing 1050 is not worth it.