4 layers8.9 × 21.5 mm
4 layers8.8 × 21.4 mm
Eth2usb
yemelgen/eth2usb1USB C to Ethernet Connector PCB Design
- Size
- 8.8 × 21.4 mm
- Copper layers
- 4
- Thickness
- 0.8 mm
- Parts
- 2
- Nets
- 24
- Pads
- 32
- Tracks, vias
- 124, 12
- Pours
- 12
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 25 Sep 2025
- Updated
- 25 Sep 2025
Overview
Eth2usb is an open-source printed circuit board by yemelgen, from the yemelgen/eth2usb repository on GitHub, published under the MIT licence. It is a 4-layer board of 8.8 × 21.4 mm with 2 parts on 24 nets, routed with 124 tracks and 12 vias.
Its parts include 1 IC and 1 connector. It belongs with the interfaces and adapters boards of this library.
README
README.mdUSB C to Ethernet Connector
The idea of this project is simply using your usb-c cable (USB3 or Thunderbolt) as a Ethernet patch cord. The PCB design include the pair of connectors attached to each end of the cable..
Here's the example pinout
USB Ethernet NIC #1
1 TX+ White Orange = B11
2 TX- Orange = B10
3 RX+ White Green = A11
6 RX- Green = A10
5 B1+ White Blue = A2
4 B1- Blue = A3
7 B2+ White Brown = B2
8 B2- Brown = B3
USB Ethernet NIC #2
1 TX+ White Orange = A2
2 TX- Orange = A3
3 RX+ White Green = B2
6 RX- Green = B3
5 B1+ White Blue = B11
4 B1- Blue = B10
7 B2+ White Brown = A11
8 B2- Brown = A10Parts
2| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | A | RJ45:RJ45SMD | J1 |
| 1 | USB_C | USB_C:USB_C_24P_SMT_Right_Angle | U1 |
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Questions
How big is the Eth2usb PCB?
It measures 8.8 × 21.4 mm and has 4 copper layers, 0.8 mm thick.
What parts does the Eth2usb use?
2 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Eth2usb KiCad files?
From the yemelgen/eth2usb repository on GitHub, at the commit this page was made from: the board is t1.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Eth2usb design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).