Knowledge Base


Studio 192: USB 3.0 chipsets, VIA Labs PL800 and PL805 - Windows 7 SP1 Chipset Incompatibility

Published October 2, 2015


When using VIA-Labs VL800 and VL805 on Windows 7x64 SP1 systems, there is a timing glitch that can be heard about every second.

This happens while recording and monitoring audio with ASIO in Studio One or while monitoring audio in Windows Media Player or watching YouTube, Netflix, etc.

This happens with either a USB 3.0 cable or USB 2.0 cable. 

This does not happen with with Windows 8.1 x64 or Windows 10 x64 which uses it's own Microsoft USB 3.0 class driver using either USB 3.0 cable or USB 2.0 cable on the same machine.

Nor does this does not happen with the onboard USB 2.0 driver on the same system using Realtek USB chipset.

This appears to be an issue with the VIA Windows 7 USB 3.0 Device Driver. 

The only work around is to use the onboard USB 2.0 controller, move to a different USB 3.0 controller or update operating systems to Windows 8 / Windows 10.

The VIA Labs PL800 and PL805 chipsets are an inexpensive USB 3.0 controller found on PCi-e, PC-Express cards and on embedded motherboard chipsets.

When purchasing add-in cards or motherboards, be sure to check the USB 3.0 chipset for compatibility, which may be sometimes hard to do, if you're not sure ask the reseller to tell you, sometimes the only way to know is look directly at the chip on the board. 



Please contact PreSonus Technical Support by creating a Support Ticket at for further assistance.

>How to create a support ticket<



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