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Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex

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'''Documentation notice:''' This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

== Summary ==
The USB 3.2 Gen1 HUB HAT adds four USB 3.2 Gen1 ports to a Raspberry Pi or RDK X3. It is driver-free, includes an external 5 V DC input (USB-C) for higher loads, and provides status LEDs.

== Related products at JW Tech ==
* [https://shop.jw-tech.eu/p/WSAL17584 WSAL17584 – USB 3.2 Gen1 HUB HAT for Raspberry Pi, 4x USB 3.2 Gen1 Ports, Driver-Free]

== Technical overview ==
* Four USB 3.2 Gen1 ports, backward compatible with USB 3.0 / 2.0 / 1.1.
* Standard 40-pin GPIO header for mounting on Raspberry Pi boards.
* External USB-C input is power-only (“PWR ONLY”), not a data port.
* Onboard hub chip VL817-Q7 and flash chip MX25L512EOI-10G.
* One power LED and four port LEDs (USB1–USB4) indicate operating status.
* Connect to Raspberry Pi 4 via a USB 3.0 adapter; adapt the connection for other Pi versions or RDK X3.
* Total bandwidth of the four ports is up to 5 Gbps shared.
* Driver-free operation under Windows, macOS, Linux, and Android.

'''Commands and examples – verify before use:'''
<syntaxhighlight lang="text">
cd ../..
cd media/pi/xxx
sudo sh -c "sync && echo 3 > /proc/sys/vm/drop_caches"
dd if=/dev/zero of=./test_write count=2000 bs=1024k
dd if=./test_write of=/dev/null count=2000 bs=1024k
sudo apt-get update
sudo apt-get install hdparm -y
sudo hdparm -tT /dev/sda*
ls /dev/sd*
while true; do sudo hdparm -t /dev/sda2; sleep 10; done
</syntaxhighlight>

== Notes and version constraints ==
* The source contains placeholders such as {{{5}}} where commands or values are missing; these must be completed by technical staff before publication.
* The Ubuntu test section assumes a graphical benchmark UI; exact menu names are not fully specified in the source.
* Stacking two HUB HATS is theoretically possible but not recommended due to potential bandwidth and power-supply issues.
* For high-power devices (e.g., external hard drives), an additional 5 V supply must be connected to the USB-C input.
* If mouse/keyboard fail: re-plug the cable and check the adapter; a faulty USB 3.0 adapter may be the cause.
* The command “hdpram” in the RDK X3 section is likely a typo for “hdparm”; have it corrected before release.
* Exact compatibility with older Raspberry Pi models is only stated generally in the source; details vary by Pi revision.

== Source and revision record ==
* [https://www.waveshare.com/wiki/USB_3.2_Gen1_HUB_HAT USB 3.2 Gen1 HUB HAT - Waveshare Wiki]
* Source revision: 103863
* Captured: 2026-08-31T04:25:12+00:00
* SHA-256: <code>429d04f767111d2cae87414139dcd5917c28082328e472d2fc0daf6516e946db</code>

WSAL17584 – USB 3.2 Gen1 HUB HAT/en - Versionsgeschichte

JWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex