Update April 18th, 2023.
Published August 12, 2021
PreSonus Quantum-series with Thunderbolt 2 (Quantum, Quantum 2, and Quantum 4848) have been reported to be having problems functioning as expected on Thunderbolt 4 equipped PCs.
Intel states that Thunderbolt 2 is not supported while connected to Thunderbolt 4 controllers.
Read more from the official Intel site here: https://www.thunderbolttechnology.net/tech/faq
The Quantum 2626 which is a Thunderbolt 3 interface is unaffected by this issue.
For those that are interested, we have found that Apple Silicon Thunderbolt 4 enabled systems do support Thunderbolt 2. The reason for this appears to be that Intel left implementation of Thunderbolt to the motherboard manufacturers. While PC Motherboard and System makers like HP, Dell, ASUS, Gigabyte, etc have decided to not support Thunderbolt 2 with Thunderbolt 4 hosts, Apple has decided to implement dual Thunderbolt controllers allowing for backwards compatibility.
Quantum 2626 customers that are having crashing issues on Windows 10 or 11, please make sure you are using Universal Control 4.1 (released April 18, 2023) or later with Windows 10 20H1 or Windows 11 22H2 or later.
Note: The information included in previous version of this article has been redacted as it was no longer valid.
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Please contact PreSonus Technical Support by creating a Support Ticket at My.PreSonus.com for further assistance.
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