After a couple of month using it, usb receiver ...
929863
After a couple of month using it, usb receiver stopped to work suddently. Couple of computers of testing and nothing seems to work so far. There's no replacement of that, no ones sell this replacement even MicroF..k. So now I have MICROSOFT LUXURY MOUSE AND KEYBOARD MUSEUM EDITION!!! no bluetooth of any version can catch the signal. Buy at your own risk.
471645
I've been using this for a couple of months now, and while it worked well for awhile, it has already "broken down." I have to hold it at a certain angle for both speakers in the car to work. Reception is fuzzy no matter how many stations you try. I'll be going back to my cassette adapter.
1424987
My experience may not be typical, but the receiver unit failed in place after a couple months.  The system operated fine until that point.  My only other note:  the push button on the transmitter is awfully insubstantial, making it unsatisfying in the hand and -- with its tiny switches -- a bit hard to click.  I've used many wireless switches over the years, and find most of them quite good.
3439516
Battery life is amazing, but the USB ports failed after a few months of general use.
2302126
Usb reciever gone within a month and no after service or replacement .......... perfectly good mouse dead
1223207
It (was) okay. It worked great for about a month (Two times for a total of about an hour and a half). Now the indicator light comes on, and the USB port will still function as a charger, but no sound comes out regardless of what I plug into it. The main function appears to be non functional.
1607478
first dongle worked for a couple of months, then I replaced it and it worked a couple of month so I replaced it with a different brand. Hope it gets more than a couple of months.
311092
I used this for a couple months then it stopped working so I replaced it with a high speed surfboard. My experience, a good device for those who only expect to get two months of use from a modem.
3015378
We bought this adapter prior to moving to the UK in August. It worked well for about a month, then the USB ports stopped charging our devices, although the outlet still works most of the time. Not sure if it's still under warranty or how to even return/exchange it since we are no longer in the US. I did purchase another LOOP adapter which is so far still working.
4417067
After a month, it just stopped working... enough said!
2461541
After only 2 months of light to normal use, the USB cord started malfunctioning ( connections issues at the base of the plug). It works if I move the cable at certain position. This is the usual place where device chargers break after time.
2861438
I was so excited to get this but usb ports stop working after 2 weeks. :(
2585079
The receiver went out two months after installing. Been trying to return it but can't figure out how. Please email me chumlee36@gmail.com
4141893
Bought 2 of these.  After a couple of months a connector on each of one failed (thankfully not the USB)
4962406
Only works occasionally after 2 months of use. Mini USB end connection is unreliable. Too late to refund as past 30 day period. Waste of money.
2708930
My aux went out about 2 weeks of having it (sound cuts in and out or it'll play only on one speaker)
USB also doesn't charge phone or can't play music from your phone just music off a USB flash drive.
4772444
One month of owning the mouse and the receiver failed - physically. It had to be jiggled when I tried it in any usb port and gave intermittent connection. This occurred with the receiver having been located in the same port and never moved. It is not worth replacing the receiver because with shipping it approaches the cost of the mouse itself. This should NOT happen with a simple device such as a usb receiver. Obviously the build quality is SO POOR that Logitech can't even get a simple usb receiver to work consistently. On top of that, I have had trouble with Logitech usb receivers in the past - they have all failed in the same way. So purchase at your own risk. This is a poor product and I will be informing all students in the software program that I teach in to avoid this product at all costs.

Update - I have ordered a replacement receiver just so that the mouse can be used as a spare. It isn't worth the money to do so, at almost half the cost of the mouse itself with shipping. What bothers me most is that I'm pretty sure that this one will fail just as quickly and in exactly the same way - we will see. At least that can't happen with the Razer Orochi that I am now using instead. It is a Bluetooth mouse.