Spend some more money and get a "real" product, e.g. x10
344504
All in all, you get what you pay for.

Incredibly shoddy assembly. The wall switch was falling apart as I was tigtening the screws in the switch box.
Instructions not clear about which wire is line, which is load (red or black?). Tried both ways, with the same dismal results... read on.
Once I've installed it, the remote switch worked ONCE. I was able to turn the light on and off just one time, after which it refused to work for no apparent reason.
The 9v battery was fresh, the light being controlled was a 60w incadecent bulb, no fluorescent lights on the circuit or in the vicinity thereof, still the unit will not work.
Tried the cryptic instructions in the manual over and over (the part about turning the master switch on and off, then the control, etc. etc). Not sure if the exact order of those operations bears any significance, but I followed it to the "t". Tried it time and again --  still no dice.

Great concept, very poor implementation.
Like other reviewers have noted, I too would have gladly paid twice as much for this product if it were designed and manufactured better.
Long story short, spend a bit more money and get either an x10 product or Lutron Maestro, or something else that actually works.
1486330
Laughably, I've purchases one X10i and two X10's because they sound above average and the only off the shelf IEM's that fit comfortably in my ear (small ear canal). I use IEMs almost daily due to travel (planes and hotels). The first X10 began to show cable wear (near the monitor) on both left and right cables within 4-6 weeks - within about 5 months only crackle sound from left cable. Had receipt from authorized dealer, but after sending them in, Klipsch sent email stating not cover under warranty due to "excessive use" - literally, that's all it said. Note, it's impossible to talk with a customer service rep.. Ridiculously, shortly after and while traveling without headphones, I was desperate and purchased the X10i from an airport store (in motion - authorized dealer). Cables seemed upgraded, so why not try again? Same sound, great comfort, and microphone quality was excellent. After 12-14 months - no cable issues! But, while hastily sitting-up in a plane seat, the long cable caught the armrest and a monitor was ripped from my ear... actually the monitor remained in my ear, but the cable severed from the monitor (easily removed from ear canal). Customer service email response was abrupt " damage was due to negligence and not covered by warranty." Seriously?? a $300+ IEM should not be this poorly constructed and monitor should detach from cable. Now on third Klipsch (another X10) - why? Paid $45 for near-new pair from eBay. I've moved back to Shure 425's with Comply tips (tolerable comfort) and being custom fitted for Westone's. Advise... spend about the same for IEM's that detach from monitors and find the right tips - or - spend a few more $$'s for custom fitted,
717219
Scaling is a real problem and the interface is fairly poor. The main screen has HUGE launcher buttons for a few not very useful functions. In the apps menu the icons are very large and poorly rendered - blurry with noticeable pixels as though they had been scaled up.

Video rendering has a similar problem. While the device claims to render 1080p, it in fact is up-sampling 720p. You can see this yourself by changing the output on hdmi to 720p - the output will look exactly the same. Actually changing the output resolution is worthwhile because it will eliminate the video tearing (black or red horizontal lines) that occur in 1080p.

I'll be experimenting with third party roms and doing a bunch more reading on xda to see what other capabilities this device has.
3675497
All things considered, I would recommend finding a different mouse/manufacturer.

Some perks include:
*Tons of buttons
*Roccat Talk is cool in theory but it doesn't work

Some cons:
*The entire thing feels very cheaply made.
*Many features simply don't work (Multimedia controls (work 10-20% of the time), macros are an insane headache to set up, and only work half the time,
*The scroll wheel on mine stopped working after about a month or so. This has been a pretty common problem. It would turn but no input would be registered, like it was sliding around, not spinning.
*The side joystick never came in handy, I found it to get in the way as it activates from the slightest touch. I just disabled it entirely.
*The software just plain doesn't work. If you want to change any settings, it takes about 2-3 minutes to save any changes, and then, you have about a 15% chance of your changes saving. If they don't, be prepared to navigate a million tedious menus just to get back to where you started.
*Customer service is NONEXISTENT. If you want them to respond you basically have to threaten them into helping you out. Took me from Feb 15th to March 5th to "fix" the issues with my driver software, a month later all the same problems kept happening. I think I just gave up on it if I remember right.

The biggest problem I had though is that I "RMA'd" my mouse because of the issue where the scroll wheel stops registering. I submitted the RMA on September 29th. It is now NOVEMBER 9th and I still don't have my mouse back. They requested a tracking number and after I gave them the tracking number, all contact from them ceased. I had to email them back for a status update every few days because their communication is simply non-existent. They'd received my mouse and sent it to the wrong address, closed the support ticket and STILL didn't respond to me until I emailed them a SECOND time to ask about the status. If the mouse was worth keeping I'd be madder, but it's their treatment of you as some sort of sucker for buying their product that really makes me want to warn anyone else before doing business with them.

If you like headaches, buy this.
3521883
I have purchased 2 of these wall switches. One wouldn't work at all and the other would not accept x10 commands. ie...it would not turn on and off by the x10 controller. Comparing it to other x10 compatiable wall switches, it was definetly an inferior product.
4471718
The product didn't work for me very long. It died after two weeks. XFX's customer support is terrible. I would recommend buying other brands' products like Corsair.
432567
I bought this at Best Buy thinking it was worth saving $20 compared to the official XBox 360 branded adapter. For $20 less, you get a lot more problems than it's worth. My setup is on DSL with a wireless modem/router with a WEP key.

The Almost Setup (Almost because it never actually totally worked):

1. Hook it up to a PC with Ethernet
2. Temporarily change your PC's ip address
3. Configure the adapter with your PC to your router's wireless security (there are two methods provided, I used the web-based method. MAKE SURE YOU USE INTERNET EXPLORER)
4. Remove from PC, hook up to XBox
5. If it does work, it will stop working in about 10 min.
6. Reset the adapter.
7. It will work again, but will stop working in about 10 min.
8. Repeat steps 6-7 FOREVER, or return this piece of junk and get the official XBox Adapter.

So... I took it back and got the official XBox Adapter.

Steps for the official XBox Adapter:
1. Hook up to XBox.
2. Program WEP Key.
3. Works and hasn't failed since.

If you want your XBox to be wireless, bite the bullet and pay the ridiculous price tag. At least it will work properly.
1651893
I had high hopes for this monitor when I first powered it on. Picture quality was crisp, vibrant, and left a very good first impression of 4K quality for this customer. I had little to no complaints about the visuals or LED lighting of the 27-inch version of this monitor.

Unfortunately, this device is crippled by its underlying hardware/firmware. During normal PC operation, the monitor will just completely shut off with the power button becoming unresponsive. Sometimes it works fine for 1hr+, other times it wouldn't last a minute. At first I thought the power cable could be loose or have a short, so I readjusted my setup and tried new cables to no avail. This happened within days upon the monitor arriving.

From other critical reviews, this does not appear to be an isolated issue; multiple people have reported the exact same behavior I observed. From what I've found, this seems to be an issue with how the power-saving mode works. Save yourself the headaches and look for a different monitor. At this price, a monitor had better work without quirks for quite a while.
377223
I would buy a high end ASUS product any day of the week. But, this computer is a joke. The software license, which now pretty much forces you to get a Microsoft account, is a bit much. Then, it would not connect to my wi-fi. I finally got it to agree that every other component on the network was using the same security key, so it should cooperate. When it did connect it told me the connection was limited. When it lifted the limited restriction it finally loaded a page after more than 1 full minute. Then it told me that the page could not be loaded.

It's not worth the trouble for me to troubleshoot, try upgraded drivers, etc. It's going back after only 1 day.
2992547
This is such a good idea it hurts, but the execution is dissapointing.
Set up was a breeze and the web site is friendly and intuitive.  The problem is that the 12-bit color and passive matrix display produces images  of poor quality.  There is noticiable dithering and color aliasing, and  photos are hard to see from the side.
I'm sure a year from now they will  come out with a model aith 16-bit color and an active matrix screen.  And  it will probably cost 1/3 as much.
I suspect my parents will still like  this, but it's not as gfood as it could be.
4453341
This product works, but I would not recommend it to a non-tech user. You are better off spending a bit more money for an easy installation and setup experience. The instructions are poor -- they use the term "PCB" without defining it (it stands for "Printed Circuit Board") -- and they are also incorrect, since it states to put the drive in "Master" mode but I only got it to work with the jumper completely removed. Tip: DO NOT SCREW ANYTHING IN until you have it working on your PC (actually, this is a general tip any time you install new hardware ;-) ).

If you are running an older version of Windows and need the drivers, they are provided on an 8cm "mini" CD which many CD-ROM drives do not support (Windows Vista and XP work without the CD, since they have the correct drivers already). Although Vista auto-detected the drive, it failed to work the first time and I had to uninstall the device from Device Manager and try again to get it to work (again, not something a non-tech user should have to do).

The package includes a screwdriver, which is nice, but it also requires you to screw the afore-mentioned PCB onto the case with some *tiny* screws (and that's something that could have been done at the factory).

All in all, I got a cheap enclosure that works, but it was more hassle than it was worth. I should have spent a bit more for a better experience.
3390320
For the start I have to mention that before this I had a mx3-2gb/8, fire stick, and 3 fire tvs.
Feeling lucky with all of them, decided to spend an extra $ hoping the get something extra for the money.
Out of the box looks just like the mx3, except that an antenna sticks out of it. It took a good few minutes to start it up( first the light was not turning on, then it turned on but no picture..., and the finally, after un-plugging-back everything several times, it did showed up on the tv as well). The main problem actually was the remote, which has a cheap look and feel and even worst functionallity. Even after 10 min of hustling with it, still couldn't get a sense of it(twisted my hand in every direction several times for every single key press).
Finally I hooked up another usb-RF remote which I succesfully used on the mx3 and my desktop, but it didn't work. And that was the last move, that started messing with my sugar levels...
Returned and ordered a FireTV, which I highly recommend since they enabled the usb hard/flash drive functionality that works perfectly with kodi.
4819891
Worked out of the box on linux, but not windows 7.
The windows update drivers didn't work either.
I had to remove them, download [...] and install those drivers by hand. More than 30mn lost.
The worst part is that I bought 2 of those, and had to follow the same procedure (including 2 reboots) to get the 2nd working working too, but even after that, it would randomly go unrecognized on windows 7, sometimes it would work, but faill at high speed.
The two I bought did not even have the same chips, and one of the two had the chip number crossed out with a black marker.

Note that this comes with a male connection, so depending on your application (i.e. every single one of mine), you'll need to buy a separate female-ribbon female cable.

I have confirmed that the ftdi chip is fake by reading its serial number of 0000.
Now, to be fair, the real ftdi chip apparently costs $4, so I guess one should not expect a real chip, but honestly I'd rather have paid more and saved the time and worry of a fake chip. Products with fake unreliable chips with random limitations should not be sold.
You get what you pay for, do yourself a favour and pay just a bit more for a real chip and no hassles.

Google
fake ftdi chip hackaday
to understand why this chip can randomly stop working now or in the future.
4016084
I looked to the 800Xs to be a pleasant upgrade for my older TB Xbox One headset, which I use for gaming and tv, the price tag came with an air of quality, but these headphones are far from a premium product. Difficult to set up and configure. Constantly doing weird things. The voice that tells you what you're adjusting is too loud and ruins any audio experience, there is no way to disable the literal voice on my head. There are latency issues. You cant lay down with them on as the side buttons get triggered, resulting in the previously mentioned voice. Not worth half of the price. The primary reason I cant and don't use these though, the volume control does not go low enough. The lowest setting is too loud, therefore I cant tolerate using them. I will never buy TB again, terribly disappointing product.
667367
Blackmagic is up to their usual tricks. They say if does 1080i, but that only applies to a single input, not a quad. They really need to be much more upfront with their spacs.
2555282
I try to be as positive as possible, but not warning shoppers about this product would be a dis-service.  I own a retail store that sells and installs high end a/v equipment.  I am very well versed in how products like this should perform.  That being said, my opinion of this product is quite low considering the following points:

1) Performance of the usb wireless link is ridiculous.  I cannot believe the manufacturer would put their name on it.  With the devices less than 3 feet from each other they would constantly drop out.  This in itself makes the product a non-starter.

2) The included software is tricky to navigate at best.  It integrates (somewhat) with windows, so you can't really tell if you're working with the GUI or with windows.  Not a deal breaker, but definitely not user friendly.

3) Out of the box resolution for the second monitor is 480p max.  If you stop there its unviewable.  After 20 minutes of updates to the software and 3 computer restarts, it does get better, but i expected a new product to either be up to date, or self updating upon installation.

4) in extended desktop mode this thing is ssssllloooowww!  Its so slow you cant follow the cursor on the send monitor.  Another deal breaker for a product with the claims they make.  And this is NOT a pc issue.  I'm using it with a brand new dell 6420 with 8g ram and 2.6g i7 running win 7 pro.

It's a great concept with poor execution. Thank goodness I got this from a reputable seller (AMAZON) that has a great return policy, otherwise this would have been a waste of money.  It's already in the box and labelled for return now, and I can't wait to get it out of my possession!  Sorry to be a party pooper, but I'd recommend you save your money for something more well engineered.
505541
Please, for your the sake of your sanity, save up a little bit more to purchase a nicer interface.  The mbox, while nice for hobbyists (and even then I would recommend something from Focusrite over this), is not capable of commercial audio quality.  It just isn't.  I've run multiple vocal sessions on the mbox where I used a very nice microphone in an ISO booth, and the tracks had so many nasty artifacts they were unsalvageable.  This is not to mention the headaches it causes when trying to connect and collaborate with your computer.  The only pro is that it is portable.