Aquacomputer Quadro Fan Controller Support Coming With Linux 5.20

Written by Michael Larabel in Hardware on 30 July 2022 at 05:20 AM EDT. 6 Comments
Introduced last year in Linux 5.15 was the Aquacomputer driver that started off as a hardware monitoring "HWMON" sensor driver supporting Aquacomputer's D5 Next water-cooling pump. In Linux 5.19 that driver was extended to support the Aquacomputer OCTO fan controller under Linux and now for v5.20 it's extended to support the company's QUADRO fan controller.

Aquacomputer is a German PC peripheral retailer and their QUADRO fan controller allows managing four PWM fans with speed monitoring support, four temperature sensor inputs, a flow sensor input, and other functionality.

Aquacomputer QUADRO

The Aquacomputer QUADRO boasts a USB 2.0 interface and with their Windows software allows managing and monitoring all aspects of this fan controller. The proprietary USB HID protocol for the Aquacomputer QUADRO has now been reverse-engineered and the Linux "aquacomputer_d5next" HWMON driver has now been extended to support this PWM fan controller.

With Linux 5.20 the Aquacomputer driver now exposes the temperature sensors and fan controls as well as the liquid flow sensor. The product's serial number and firmware version are also exposed through DebugFS.

This Aquacomputer QUADRO support for Linux is queued up via hwmon-next ahead of the Linux 5.20 merge window opening at end of day tomorrow.
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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via

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