@SMNC Welcome to HP Community!
I understand that you would like to upgrade the wireless card.
Do not worry. I will try to help you.
I have checked the motherboard specifications. Your motherboard has a PCI slot. You can go ahead and upgrade the Wifi card.
You could purchase the part from HP, use the HP Parts surfer to identify the part: http://partsurfer.hp.com/search.aspx
And order it via the HP Parts store: https://parts.hp.com/hpparts/CountryChoice.aspx?mscssid=&ccode=ZZ&lcode=ZZ
Or alternatively, Contact HP for setting up an order/service via phone support.
Keep us posted,
If you would like to thank us for our efforts to help you,
Give us a virtual high-five by clicking the 'Thumbs Up' icon below, followed by clicking on the "Accept as solution" on this post,
Have a great day!