It looked like the circuit board with the security chip on the ...
590275
Cartridge was non-functional, had to return. It looked like the circuit board with the security chip on the left side of the cartridge had been installed upside down.
3757796
Looked solid!  Sadly, I was not able to use it with a Simon XTi alarm panel.  I would register, but only as an "unknown z-wave device."  I appreciate the quality hardware.
3087917
It seems to work well. But first thing I noticed was a chip in the black anti-stick surface.
2546488
It appears to have the look of a torx socket in the pictures.  Guess I should have read the description.
3018254
The see decurity chip in the key was bad. I had to hire a locksmith to get the fob to work properly. The locksmith happened to have another chip from another key that was good that allowed programming. If the locksmith would not have been able to do this, I would've had to return for a refund. Now the key is working perfectly.
2298872
We disassembled one of the units and it was found to have a counterfeit FTDI chip.  It does not work reliably (FTDI software checks for counterfeit devices) and should not be sold on Amazon.
3364979
As the rest say, it works, is entirely undocumented as it comes from Amazon, relies on the YouTube video, and the chip orientation does not correspond with either the video or the diagram on the board itself.
2846743
this thing is great for the money installed  issues windows 10 and pic I took of circuit board chip works great
4087130
The circuit board itself is working fine and it fixed the problem I was having with the microphone not working.

BUT BEWARE there is a very easy mistake to make when replacing this circuit board. I made the mistake and now my home button no longer works.

Before you remove this circuit board, you must disconnect ***TWO*** cables from it -- one is fairly obvious and the other is not. If you do not disconnect them both, you will probably end up tearing the cable that goes to the "home" button, like I did. See the attached photo with the torn cable still attached to the old circuit board.

(It looks like Amazon sells the home button/cable assembly too. But I am not sure yet if I will invest more money in repairing this phone.)

Also, next time I would buy the kit without the tools. The screwdrivers were of poor quality and the tips were malformed. I used my own 2mm Phillips head screwdriver and discarded theirs. I did use one of the plastic pry tools to separate the phone case.
2830278
mine did arrive with a small chip, but i was able to cover it over with a green felt pen so you can't even notice
4732824
Item was listed as a mini card. What came was a full sized data chip for a camera or laptop that I couldn't use where I wanted to.
2473886
The SainSmart 3.2" TFT LCD module looks like it would be a good little display, but I wouldn't know. When I opened the box the module was in a static bag, but it was not protected from the other items within  the box. It did not look damaged, but when I plugged in the module into the Raspberry Pi 2 you could clearly see that the back layer of the module was cracked as soon as the backlight came on. The surface looked fine, but it was clearly damaged when powered on. This was not the worst part of the issue. I submitted a request to return the module and was it was accepted. I packaged the module very well; too well. I put the module in a small box within the shipping box. The problem is that I used a box from the "3.2" TFT LCD Transparent Case for Raspberry Pi 2 (Black)" that I had ordered with this item. Amazon thinks that I returned the CASE not the module. I wouldn't even care, but there is a $20 difference between the items and someone out there is going to order a "3.2" TFT LCD Transparent Case for Raspberry Pi 2 (Black)" and get a broken "SainSmart 3.2" TFT LCD module" instead.
424186
This thing looks like it was put together with the lowest quality parts. I know I am not one that knows anything about solder work but this thing had solder on the board and it was cracking at the solder points with like a battery acid like substance all over the board. I attempted to clean the board but after cleaning it I did not want to even chance connecting it to my hard drive and my xbox so I sent it back. Pay a little more and get the StarTech,
1658151
I like it but the batteries corroded down onto the circuit board below the batteries. Is there anyway to get another board?
518122
Used the PCB board for something else. It worked pretty well though.
3129465
Two vertical rows of lights in the date portion were out. Being reluctant to return the unit, I took a closer look and found some corrosion around some of the solder points on the circuit board. After cleaning each of those areas, all the lights are fully functional.
3118755
Um, it works great but looks like it has a, well,  there is a piece between its legs. SURELY someone saw this during the design.