I'm currently shopping for a secondhand PC and need to add WiFi for my setup. My motherboard is an ASRock B550 gaming, which features a dedicated M.2 slot (E-key) specifically for WiFi cards. I'm wondering about the pros and cons of opting for either an E-key or a PCIe WiFi card. I've read that E-key might have a more compact antenna but I've also seen PCIe cards that contain an E-key chip. Can anyone clarify the differences and suggest which option might work best for me?
3 Answers
I'd advise you to go with a PCIe card if possible. E-key cards are typically designed for laptops and smaller PCs, which means they might not deliver the best performance in a desktop setup. In most cases, the antenna placement and overall connectivity of PCIe cards will serve you better, especially if your case has room for it.
I agree! I switched from E-key to PCIe and noticed a significant improvement in speed and signal consistency. Plus, many PCIe cards already include Bluetooth, which adds to their value.
Honestly, there's not much difference. The E-key setup will be cleaner since it integrates directly with the motherboard without needing an extra USB cable for Bluetooth like a PCIe card would. You can simply get a desktop kit version, like this AX210 desktop kit which comes with a bracket for the antennas. Don't believe the rumors about E-key being inferior for desktops - that’s not true at all!
If you're leaning towards PCIe, you're likely making the right choice. They generally have better antennas, leading to stronger connections and more reliable speeds. Plus, you'll often find models that include Bluetooth functionality built in, so it’s a win-win!
It's good advice, but keep in mind that PCIe cards can also complicate your setup due to needing that extra USB connection for Bluetooth. E-key may deliver a simpler install if you prefer that.

Actually, that's not really accurate. PCIe cards are just adapters with an E-key module, but they require an extra USB connection for Bluetooth, which isn't necessary with E-key on your motherboard. Plus, you can buy a desktop kit version for easier installation.