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This has been driving me crazy for almost 2 months. I started thinking it was a mad motherboard.

My gaming system has been randomly - especially during gaming but also on the desktop - experiencing hardware disconnects. I hear the sound effect associated with a USB device being unplugged. Sometimes it would happen repeatedly.

When it did happen I would sometimes notice a hiccup in the game I was playing. Once the keyboard backlight went off and on, sometimes the mouse stopped responding for a half second. One time the monitor turned on and off.

Now even though this is the sound a USB device makes when unplugged, ANY hardware device turning off or being unplugged will cause this sound. Unplugging my Display Port monitor, for instance, will cause this sound.

The fact that it SEEMED to be affecting multiple devices was throwing me off, and I explored all kinds of things to try to remedy it: Upgraded my gaming PC from Win8 to 8.1 (needed to be done anyway). Installed the latest mobo drivers and firmware. Upgraded the Logitech mouse software. Uninstalled a variety of background apps. Disabled power management on all the USB ports. Even rolled the boot drive back to an image from August 2015. Nothing worked, and it kept getting worse. Often I'd be in a FPS game and I'd hear the sound and suddenly my character starts side-stepping like crazy.

I thought I had bad USB ports so I installed a spare Belkin 4 port USB PCI card and disabled the onboards, but no joy. Swapped out the keyboard (a Corsair K70), but that didn't help.

There is, sadly, NO WAY to tell what is being disconnected. These events aren't logged. Someone once wrote a utility to do this (I think maybe it was Winternals) but it doesn't work with Win8 and above. Someone really needs to write one.

For some reason it never occurred to me to swap out the mouse except as a last desperate measure. The mouse (a Logitech G400 gaming mouse) rarely stopped responding during these glitches, so it wasn't even on my radar. However when I started swapping USB ports I did notice that my mouse wouldn't play nice with a USB 3.0 port - it kept freezing. So I swapped it for the identical G400 on my workstation and SURE ENOUGH that was it. No more disconnects on the gaming PC, now I get hardware disconnect sounds on the workstation.

Sadly the G400 is no longer being made (I loved that mouse - should have bought a couple of spares) and the G400s that replaced it is also discontinued (and reviews implied it was made with "mushier" switches then the G400). After reading a lot of reviews it looks like the popular wired Logitech gaming mouse nowadays, without breaking the bank, is the G402. Unfortunately it doesn't have the three top buttons like the G400 did (they are on the side now), but I guess I'll adapt.

The G400 was a great mouse, and so was the MX518 it replaced. Hopefully I'll like the G402.

Heh, turns out it was the classic bane of wired mice: a broken wire where it enters the mouse. It never really ACTED like a broken wire, but when I gave it a yank, it disconnected the mouse. Cut out the bad section of wire and soldered it and it's as good as new

I see that Amazon has the G400: http://www.amazon.com/Logitech-Optical- ... B0055QZ216

Yeah FOR AN INSANE $140. That was a $60 mouse originally. It's discontinued and because it WAS a great mouse, they're going for $60 just for a USED one.

That's why it was worth taking mine apart and fixing it.

Love that mouse.

I'm glad you found the issue. I bought the G502 to replace my MX518. I really like it. http://www.amazon.com/Logitech-Proteus- ... B00IRHE892 I only paid $60 for mine though so keep a look out for sales.

What bothers me about the 502 and all the other new models is that they no longer have three buttons on top in line with the wheel. I really liked that in the MX518 and the G400. I map those to the page up, page down and home keys and use them in every game I play.

It's also the perfect shape for my big hands.

I've adapted to the side buttons. You get used to it eventually of course. I too have learned to buy 1 a spare of any peripheral I really like.

Ha I have that same mouse but corded. Won a mouse Bungee back during the PCAlan days and so far this mouse is still working.

Yeah mine's corded as well. I can't stand wireless. I can feel the lag in a game, no matter what they say.

Fortunately, now that I've repaired that mouse, I have two in good condition. I'm going to keep one as a spare instead of using it on my workstation, since I don't game on my workstation. I put the old MX518 on the workstation (the predecessor to the G400). It has a worn right mouse button (still works but feels weak) which made it unpleasant to use for gaming, but it's fine for desktop work.

I can see why the cord failed on the G400: it's thinner than the one on the MX518. I haven't seen a cord failure in a LONG time on a quality gaming mouse.

In all fairness to the mouse, what kind of mileage did you put on it

Lots, I admit, but with these gaming class mice the only thing that wears out is the buttons usually.

I just grabbed a free Logitech "performance mouse mx". It was new in the box, and the guy at work did not want it. Looks like this:



Right now, I'm trying it on my laptop to see if I like it. If I do, I'll replace my old MS Explorer mouse.

I have been using a M510 wireless, but I have another mouse unopened in the box, some logitech I think, as well as a new kb with those cherry switches. I have been using a wireless mouse/kb and in the only game I really play - GW2 - I've been noticing the pause. I just hate getting used to new things but one of these days I'll get them out and break them in.

I believe Logitech has a new wireless gaming mouse that's supposed to be FASTER than corded. To charge it, you plug the cable into the front, so it looks like a corded mouse and it works like a corded mouse when the cable is plugged in. Remove it and you go cordless. I'll look for the link. It was an article I just read in the last couple of days.

I've had the same Logitech G9 for years. It's one of the only mice I like the feel of (with the wide adapter). It's not been made in years. I've already re-soldered the cord twice, but it keeps on chugging. Be sure to blow out the wheel when you do though. It tends to get finicky with the tiniest dust.