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Small green M.2 circuit board with gold edge connector and black antenna sockets

Lenovo

Lenovo 04W3765 M.2 Wi-Fi adapter

SKU CH-8K41-CFSEW

An M.2 Wi-Fi adapter for adding wireless connectivity to compatible laptops

  • TypeM.2 Wi-FI Adapter
  • M.2 form factor fits modern laptop slots
  • Ready for installation after complete testing
  • 30 day no questions asked warranty included
  • Genuine Lenovo 04W3765 WLAN Wi-Fi card
  • First listed by manufacturer in 2020

Lenovo 04W3765 M.2 Wi-Fi Adapter

The Lenovo 04W3765 is an M.2 Wi-Fi adapter designed for laptops or compatible desktop boards that accept this form factor. It suits technicians repairing a Lenovo system or builders adding wireless connectivity to a supported platform. Buyers needing a different interface such as mini PCIe or USB cannot use this card.

M.2 Key and Antenna Constraints

The card fits an M.2 slot wired for Wi-Fi, typically an E-key or A-key connector, and relies on the host device to provide antenna cables. Without the correct keyed slot and attached antennas the adapter will not function. Systems lacking an M.2 Wi-Fi slot or the necessary RF wiring cannot support this part.

Installation Notes

Installation requires opening the device, locating the correct M.2 slot, inserting the card at an angle and securing it with a screw before attaching the fragile antenna connectors. Common issues include using the wrong keyed slot, damaging the U.FL cables or forgetting to enable the device in BIOS. The part was tested and listed in 2020.

Highlights

  • M.2 form factor fits modern laptop slots
  • Ready for installation after complete testing
  • 30 day no questions asked warranty included
  • Genuine Lenovo 04W3765 WLAN Wi-Fi card
  • First listed by manufacturer in 2020

Specifications

TypeM.2 Wi-FI Adapter

Questions about this item

Which M.2 Wi-Fi adapter capacity or version should I pick?

The listing shows a single Lenovo 04W3765 M.2 Wi-Fi adapter with no alternative capacities or versions to choose from.

What does the M.2 form factor mean once the card is installed in my laptop?

The M.2 form factor lets the card slot directly into a compatible M.2 keyed socket on the motherboard without cables.

What interface or standard does this adapter use and what does it cap in practice?

The adapter uses an M.2 interface; the practical speed ceiling depends on the host laptop's M.2 keying and wireless controller.

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