This is a project to integrate a Logitech™ Unifying Receiver internally for laptops. Specifically, I designed this to fit an M.2 2242 slot (M+B key) for my Thinkpad X1C6 (replacing the WWAN card).
If space permits, any low-power USB device (under 500 mA) can be plugged into this adapter.
- M.2 2242 form factor for internal installation
- Optional USB-A receptacle solder pads for testing/thicker laptops
- PCB cutout for minimum height when not using USB-A receptacle
- Resettable fuse to avoid overcurrent/short circuit damage
Most thin and light laptops have a limited number of USB ports, especially USB-A ports. Currently, my Thinkpad X1C6 has 2 USB-C and 2 USB-A ports, and I constantly leave my wireless mouse receiver in one of the USB-A ports.
After seeing similar products available for older laptop models, I couldn't find one that fit in my M.2 2242 slot, so I made my own. All it does is provide 5V power for the USB device and routes the USB data lines according to the M.2 specification (local copy available here).
PCB thickness must be 0.8 mm to fit in standard M.2 slots.
- Separate flex PCB for easier soldering of "floating" USB device
| PCB Front | PCB Back |
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