uHub — USB hub expansion card
Open-source card with three USB-C ports, an internal FFC USB header and speaker pads, from the maker of uPico.
What it takes
- Plug & play
- Purchase required
Difficulty 1 of 3 — easy.
Details
uHub turns the expansion slot into a USB 2.0 hub with three external USB-C ports plus an internal connector for devices mounted inside the case; it keeps the speaker connections the 4G board would otherwise provide. Files are on GitHub and boards sell on Tindie. The RF Toolbox build uses a modified uHub as the backbone for internal GPS, SDR and LoRa modules.
Links
Open at Forum thread- GitHubRepository
- Tindie — uHubShop
Related mods
A community PCB that replaces the 4G modem with four extra USB ports — schematic and layout on Codeberg.
Uses the FPC connector for power and I²C, and the mainboard's unused USB pads for a GL850 four-port hub — Qwiic and solder headers out.
Vitaly's open-hardware card puts an RP2040 microcontroller and a GPIO pinout in the expansion slot for sensors, hats and firmware projects.
Zucker's minimal card: a microSD slot, an internal-facing USB port and every GPIO from the PCIe-style connector broken out.
Radiation_Joe's Tindie card adds four USB-C ports; Kirou uses it to mount an internal SSD, tested on CM4 and CM5.
Open-hardware expansion card that brings two USB-A ports to the outside of the case.