https://community.sony.co.uk/t5/xperia-archive/usb-problem/m-p/3142936#M319561 <P>Sounds strange. How big are the videos you are trying to transfer?&nbsp;</P> <P>Do you experience any difference if you change the USB connection mode under settings &gt; Xperia &gt; Connectivity &gt; USB connection mode? Change between MTP and MSC.&nbsp;</P> Tue, 26 Nov 2013 11:09:49 GMT Alexander1 2013-11-26T11:09:49Z https://community.sony.co.uk/t5/xperia-archive/usb-problem/m-p/3142935#M319560 when I going to copy any l gb video on my Microsd card via pc then after copy 50~60% mobile automatically disconnected with pc and copy stop what will be reason Sat, 23 Nov 2013 13:39:13 GMT https://community.sony.co.uk/t5/xperia-archive/usb-problem/m-p/3142935#M319560 kartikmandavia 2013-11-23T13:39:13Z https://community.sony.co.uk/t5/xperia-archive/usb-problem/m-p/3142936#M319561 <P>Sounds strange. How big are the videos you are trying to transfer?&nbsp;</P> <P>Do you experience any difference if you change the USB connection mode under settings &gt; Xperia &gt; Connectivity &gt; USB connection mode? Change between MTP and MSC.&nbsp;</P> Tue, 26 Nov 2013 11:09:49 GMT https://community.sony.co.uk/t5/xperia-archive/usb-problem/m-p/3142936#M319561 Alexander1 2013-11-26T11:09:49Z