Four-port USB hub extension board (argz)
A community PCB that replaces the 4G modem with four extra USB ports — schematic and layout on Codeberg.
What it takes
- Plug & play
- Soldering
- Purchase required
Difficulty 3 of 3 — advanced.
Details
argz published the schematic and board for a USB 2.0 hub in the modem slot in July 2023, inviting pull requests; it is one of the earliest open expansion designs and predates the commercial hubs. You order the boards and assemble them yourself.
Links
Open at Forum thread- Codeberg — uconsole-ext-usb-hubRepository
Related mods
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.
Open-source card with three USB-C ports, an internal FFC USB header and speaker pads, from the maker of uPico.
Zucker's minimal card: a microSD slot, an internal-facing USB port and every GPIO from the PCIe-style connector broken out.
Open-hardware expansion card that brings two USB-A ports to the outside of the case.
Zucker's open KVM card based on the yuzuki-hcc HDMI capture design; standard or micro-HDMI input, recessed to fit the case.
An open expansion card with a LoRa radio (RFM98-class module) and a GNSS receiver, designed for Meshtastic-style use.