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03-17-2021 01:00 PM
Hello there. My laptop model is 250 g4. My wifi card; "rtl8723be 802.11 bgn wi-fi adapter". however, according to my estimates, this card failed. I have erased the drivers, updated, downgrode and tried. This made me think that my wifi card was broken (I opened my laptop, when I saw that my wifi card had 2 antennas but my computer had only one antenna, I just changed the antenna location but it didn't work). I can buy a new one, but I can also get a better one. that's where the problem starts. There are many AC powered pcie wifi cards on the internet. Can I wear one of them (what I want)? Or is there a compatibility problem? If there is a compatibility problem, what is this compatibility triggered (chipset, socket etc.). If you can answer these questions not only for HP devices but universally for all laptops, you can help many people.
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03-17-2021 02:00 PM
Your notebook has a BIOS whitelist and there is only one wifi card that may work.
See this discussion...You can also get the RTL8821CE wifi card on Ali Express. Get one with a HP Part number on it.
03-17-2021 02:16 PM
Ok i get it thanks. But lets imagine there is no whitelist. So what can i do. How can i choose wifi card?After a short research, I realized that the compatibility is based on the type of wifi card entry (m.2, Pcie, Pcie mini etc.). is this true? If true, how do I know my nest type. Is it understandable by looking at the length and other physical characteristics of my old wifi card?
03-17-2021 02:24 PM - edited 03-17-2021 02:24 PM
You're very welcome.
There is a whitelist because other forum members have tried installing different WiFi card's to no avail.
Also, any other dual band WiFi card requires two antenna wires to work right.
The RTL8821CE card works with the single antenna wire.
03-17-2021 02:35 PM
I think I got it. Even if the input parts fit (I think my laptop's input is m.2), not every wifi card can fit. Whitelist is used to prevent this situation. But if there is no whitelist on another computer, would it be the only thing it would look for in this case (m.2, pcie etc.)? You helped me enough to solve my problem. However, if you also answer this question, you would make me very happy.