USB 2.0 Device recognition when connected to VL811


#1

If the VL811 is connected between a printer which supports USB 2.0 and a PC USB 3.0 controller, how will the printer be recognized? as a 2.0 or 3.0 device?


#2

Hi Suzanne,

Thanks for posting your question here! If a USB 2.0 device is connected to a USB 3.0 port on the system either directly or via a hub, it would report itself only as a USB 2.0 device.

If a USB 3.0 device is connected to a USB 2.0 port on the system, it will drop down to USB 2.0. If a USB 3.0 device is connected to a USB 3.0 port via a USB 2.0 cable or a USB 2.0 hub, then also it will drop down to USB 2.0 .

In other words the mode is set by the slowest element in the connection chain between the device and the OS.

For a device to work in USB 3.0 mode, all the elements in the chain - the device, the cables, USB ports and any any hubs in between , should all support USB 3.0. Only then can the additional bandwidth of USB 3.0 be used.

As your printer is a USB 2.0 device, it would only work in USB 2.0 mode irrespective of whether it is connected to a USB 2.0 port or a USB 3.0 port.

Hope the above information helps! If you need any additional information, please do feel free to shoot us an email at support@plugable.com. We are here to help!

Regards,
Roze


#3