Works... for awhile...
924313
The Edimax Wireless Mini USB Adapter is a great little WiFi Adapter.  The first time I installed it, it set up and worked like a dream... Fast, Good Connections, Great Software for managing your connections (much better than the built in Windows 7 stuff).  The problem is when you remove it from some systems.  I made the mistake of "ejecting" the unit (Safely Remove Hardware and Eject Media) and then reinserting into the USP port... and...nothing!... The rest is history... I tried uninstalling, reinstalling, uninstalling and reinstalling... disabling other wireless adapters, etc.  It appeared the unit was "dead".  I eventually had to Open Device Manager and watch for the unit to appear upon inserting into the USB port.  Then, I manually installed the driver from the CD ROM.  My system then recognized the unit and I thought I was set... until I restarted the System and it wasn't recognized again.  I finally rectified the problem by once again uninstalling everything to do with Edimax, inserting the unit in the USB Port, manually installing the driver, manually installing the connection software and then restarting the system.  This seemed to work for the time being.  I am not a Computer Genius, but I am not a newbie either.  This thing seems to not ever want to be unplugged from my computer... if it is... well, read above.

If you are in need of a nice little WiFi adapter and have a USB port that you don't use and don't need and don't mind leaving this plugged in forever then I recommend.  If you want to take it with you... well, I would advise caution.

I am sure that on some systems this would not be the case... but On mine (Windows 7, couple years old with all updates, etc) it wasn't.  I would recommend buying a more expensive brand if I had to do it over again.
4441064
Worked great while it lasted. My cable company won't fix my signal issue, so I got this signal booster. It provided enough signal to keep my cable modem connected and several HD set top boxes working. They seem to stop working after about 10 or so months. I went through two of them already and decided not to buy another one, knowing it'll break again in 10 months.
3234144
Worked really well for a while... then kept losing signal (screen would go black) for a second at a time every 7 seconds or so.
3747212
Works OKAY ... after about a month or two it started showing weird numbers on the screen, tried replacing batteries and still is hit or miss on whether or works or not
684054
Works great for a while, then not at all. I have two installations and nether will work for much more than a month before needing to re-do setup. Very annoying.
3369275
Worked OK for about 6 months, after this period of time it started to be touched in order to work.
383787
It worked for awhile, 3 months or so, but then wore through. Maybe it's a good idea to spend a couple of dollars more and try a "factory brand."
1757706
Worked for a while and then starts to intermittently work.
I'm sorry I bought a second before the first one stopped working.
The same thing happens with the second.
I guess there is a reason they have so many refurbished product.
3478490
Worked for a little while, but tossed it out after a year. Maybe it was the battery???
4718395
Worked great for a few months and then didn't. I'd have to click it a few times to get it to engage, and eventually it stopped working completely. I'll probably attempt a repair at some point, but for now it's sitting in a box.
2127407
The product did work as described.  However, it starts to get flaky and loose its identity as an authorized charging cable.  Eventually it stops charging all together.  The size of the connector is great and so is the thickness of the cable.  However, in less than a year it is now only functioning intermittently.
1278128
At first, this product worked perfectly. However, after several months (about 6 or 7) it automatically stopped working I don't know why.
1590342
Only works for awhile...  If it gets hot ( like most car dashboards do in the sun) It comes unstuck.
2221216
It worked for awhile, but pooped out after a year or so.

Was hoping to get a little more life out of it, but oh well. Can't really complain for a $40 battery.
2239317
Worked for a while. One USB port quit working after about three months, the second quit this week. Not pleased.

Update 8/17, 2017: After this review Sunvalleytek sent me a free replacement. It has worked without a problem since June. Thbey came through.
2560610
Purchased this in April 2015.  Like a lot of Sabrent products, it worked great . . . for a while.  Started working intermittently in September 2015, and now in October, only one of the four ports still works.

I've had similar experiences with other Sabrent products. I should have known better.

Update:  10/19/2015:
As can be seen in comments, someone from Sabrent commented on my review and offered to send a free replacement.  After emailing them, they promptly sent a replacement, which is working fine.  I'm raising the review to 4 stars as it is working well.  Hopefully it will last longer than the original.  Will update if not.
2908462
When it worked, it did what it supposed to do. But after a few months of light use (less than twice per week), it crapped out on me.