Hi:
You should be able to upgrade to this model AC wifi card if your notebook currently has either the Realtek RTL8723DE or Realtek RTL 8188EE wifi adapter.
Realtek RTL8821CE 802.11 ac 1x1 WiFi + Bluetooth 4.2 Combo Adapter (MU-MIMO supported) HP part # L17365-005.
You can find this model on eBay, or Ali Express,
https://www.ebay.com/sch/i.html?_from=R40&_nkw=L17365-005&_sacat=0&_sop=15
The card will have the same 72 MBPS throughput as the original wifi card on the 2.4 GHz wifi band, but on the 5.0 GHz wifi band, it will have a max throughput of 433 MBPS when you have an AC router with an excellent wifi signal strength.
Below is the link to the service manual, where you can find the wifi card removal and replacement procedure.
HP 14 Laptop PC (Intel)HP 14g Laptop PCHP 14q Laptop PC Maintenance and Service Guide