Some limitations on what you can connect with this adapter
354411
Did not work with the Netgear P2TV3000 WiDi (Miracast)connection with a Dell monitor or a Hitachi data projector using a Dell Venue 8 Pro tablet as the signal source. However, it did work with an HP Netbook in place of the Dell tablet, hardwired from the netbook HDMI port to the DVI port of the monitor or projector.
2834998
The obvious use for this adapter is to connect flash drives to phones.  Also can use my Yubikey with my phone.

But it also allows me to connect my phone to the powerline ethernet line.  Now if I'd just remember to keep my phone plugged in to the ethernet.  My problem is that our home is in a dead zone created where two or three cell tower coverage overlaps.  We have a AT&T Microcell that corrects this and it is connected to our wi-fi but the solid wood ship lap in the walls very effectively block wi-fi signals.  When my phone is in the back of the house, it may have no more than 1 bar and I've learned that the phone doesn't ring when the signal isn't strong enough so I frequently miss calls.  By plugging the phone into the ethernet using this adapter with another adapter I already had for ethernet to USB 3, I get full strength phone signals.
2227667
The adapter is good but for some reason it doesn't allow my monitor cable to actually screw in to the threaded holes. It can only be screwed in on one side...the other side doesn't seem to catch & just turns & turns. But, the adapter serves it's purpose as long as I don't move it around when it's connected:)
2211251
Works great, but the small adapter is engineered to fit only a certain kind of camera. This kind of reminds me of the headset adapters from the early 70s (before they were standardized by the electronics industry)  and how you had to buy a half dozen or so from Radio Shack in order to play your electronic device.
2758626
There was no description of the size opening and it is too small. I am trying to find an adapter with a larger opening. Everything else is a match
2714866
I had an older monitor that needed this adapter to connect to a Windows 10 desktop that had an hdmi connection (it also had a USB port). The connection between this adapter and the old 15 pin monitor cable was so loose that I needed tape to hold it together. It did the job but I don't think that I can recommend it based in the connection issues
1642520
It works properly, but the size of the adapter is too big to plug it in next to a normal USB.
1113645
This adapter only seems to work with about 40% of the HDMI cables I have tried to use it with. Too cheap to be worth my time to return, but I do want to warn you not to count on this "just working"
1969103
This adapter works for the most part. The port on the adapter is not precisely to specifications in that the connection from the monitor is not snug as it should be. This is not a problem with the monitor end.  In order to insure a good connection, some electrical tape was needed. Otherwise, it works.
2617220
For my use, this adapter is wider than ideal and partly blocks the adjacent USB-3.1 port. Yet, it functions well. My rating is base on suitablility for my needs.
2993918
I purchased this adapter to use a newer style monitor with my laptop and it would not work
3235205
It works but the usb connectors are limited in use.  I think I had trouble charging a tablet like an ipad.  I ended up plugging in a real ipad charger to the adapter.
4791197
Good adapter for my use.  It works.  Connectors are not gold plated but this is not being used in a high tech setting.
4852482
This adapter gives me the choice of bands.  The signal is weaker on 5ghz, but there is less traffic so I use this band for media.

System crashes and abnormal reboots frequently boot up with this adapter not found.  My best guess is that either the hardware or the drivers have a USB problem when reconnecting.  A simple pull-out and plug-in usually solves the problem, so have an external port handy or a hub on a monitor for easy access.

Streaming media is acceptable even on two bars.  If it weren't for the connection issues, I'd rate it much much higher.

If I ever need another adapter, I will look for something else and unless the price difference is staggering, I won't purchase another of these.
2607696
The adapter to the computer keeps popping out. Its too short.. BBut all the adapters do fit but they are too short or not long enough
1073017
I was not aware that I would need an adapter to use this item. I had to order an adapter separately; otherwise, the item is as advertised.
3243598
See the summary, above.  I am using the adapter with a mini-notebook which has two USB ports.  One port was in use for a wireless mouse dongle and the other for a flash drive with game applications which normally require an optical drive to run.  I wanted to add an optical drive to install and play a game that requires the disk be in an optical drive to be run.  This adapter permits me to have the three devices attached at the same time while freeing up one of the PC's built-in ports.