GIGABYTE GA-H270-HD3, External USB Error

[Mizi]

Hi,
I have problem with external USB 2.0 and 3.0 on the front panel in my chassis. When I connect my front usb and I use in first usb wireless  mouse, and second pendrive then my pendrive disconnect. The same problem have in USB3.0 when my mouse is connected and connect usb3.0 pendrive then my mouse is disconnected. Problem is when my mouse is connected to one of the two connectors. When I connect two pendrive and copy from one to another all is ok.

Can you help?
Regards
Lukas

[shadowsports]

What kind of case is this?  Are you certain the connectors are matched correctly to the headers on the board (2.0, 3.0)?  PIN configuration matters as well.  Some cases have plugs where the PINS in the plug don't match the header on the board.  <<< USB 2.0...  3.0 always matches.     

Do you ever see an error in the System Tray..   This USB Device Could Perform Faster.... 

What does Device Manager show?  Any issues there.  Do you hear the detection sound when a device is connected?  Is it dropping off during a large file transfer?? 

The bus should be robust enough to handle multiple simultaneous connections.  However, if the PIN configuration, connection or power draw of a device (example) is high, it could cause other ports to drop off unexpectedly.  Using powered/unpowerd hubs can cause issues too.