Lightning Fish

TL;DR

• MT7927 is an M.2 2230 (E‑Key) Wi‑Fi card. Wi‑Fi runs over PCIe; Bluetooth runs over USB.
• For best stability, use Windows 11 64‑bit (23H2+ recommended).
• If you can’t see 6GHz, it’s usually router/region/settings — not a broken card.

1) Before you start: compatibility checklist

• Slot: Your laptop/mini PC must have an M.2 2230 E‑Key (WLAN) slot (not an SSD slot).
• Desktop PCs: You typically need a PCIe adapter. To get Bluetooth working, connect the adapter’s USB cable to a motherboard USB header.
• OS: Windows 11 (64‑bit). Update Windows before installing drivers.

2) Hardware installation (laptop / mini PC)

1. Shut down the PC and unplug power (and battery if applicable).
2. Open the back cover and locate the existing WLAN card.
3. Remove the screw, lift out the old card, and insert MT7927 at ~30°.
4. Reconnect antenna leads (MAIN/AUX) firmly.
5. Close the cover and boot into Windows 11.

3) Driver installation (Windows 11)

1. Go to Settings → Windows Update and install all updates (23H2+ recommended).
2. Install the Wi‑Fi driver first, then the Bluetooth driver.
3. Reboot.

4) Verify it’s working

• Open Device Manager → check under Network adapters and Bluetooth.
• Connect to a 5GHz/6GHz network and run a basic speed test.

5) Troubleshooting

Bluetooth is missing (common on desktops)

• Confirm the PCIe adapter’s USB cable is connected to the motherboard USB header.
• Reinstall the Bluetooth driver and reboot.

6GHz network doesn’t show up

• Make sure your router has 6GHz enabled and your region supports it.
• Move closer to the router (6GHz has shorter range).
• Update Windows + drivers, then reboot.

Random disconnects / high latency

• Device Manager → adapter properties → Power Management: disable “Allow the computer to turn off this device to save power”.
• Try a fixed channel on the router and reduce interference.

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Recommended products

• MediaTek MT7927 Wireless LAN Card
• MT7925 Wireless LAN Card