to find the exact hardware configuration for your specific unit. If you'd like to find the exact specs for your machine: using that serial number? IdeaPad 3 15IAU7 - Lenovo PSREF
The is compatible with most Lenovo ThinkPad Laptops and ThinkCentre Tiny Desktops that require 45W to 65W of power via the Slim Tip connector. lenovo pf9xb
I’ve got a board here. From what I can tell, this is the stock motherboard for certain Lenovo ThinkCentre desktops (possibly M73/M83 series). to find the exact hardware configuration for your
For a more precise feature list, you can enter this ID into the Lenovo Product Specifications Reference (PSREF) I’ve got a board here
If your PF9XB has died, do not cheap out. Buy a genuine Lenovo replacement to protect your motherboard. Your ThinkPad earned a reliable power source; don't kill it with a counterfeit brick.