Well i wanna let you all know what will happen with this mouse in time and the owner must expect that and do not try to fix it.
i had my G400 in february this year and last week start to disconnect suddenly during game and i heared on my headset a short sound on win7.
this was happening not so often but after 2 days was a nightmare
i searched on google and i found that G400 has a major bug that will happen in all mice
the usb cable that comes out from the mouse will broke and will keep disconnects.
thas why after thousands of complains from customer LOGITECH took action an mde the G400S that will replace G400 and eliminate the bug
so for that LOGITECH made an extra support for the usb cable exactly after the cables is out from the mouse,check on the picture.
that point was exactly where my cable was broken so LOGITECH solution was correct.
my point is ,when your G400 will start disconnect DO NOT TRY TO :
-reinstall drivers
-reinstall windows
-change usb port
-try different driver
-etc
but get a.s.a.p. to the service and in most all cases they will replace it with G400S
for those who wants to buy G400 i advice to go for G400S and will not have this bug
all discussing about the bug
http://forums.logitech.com/t5/G-series- ... d-p/754026good luck with it!