I bought three of these, all identical 8GB G4 models, and all three of them are equally slow. It's sold as a USB 3.0 stick and it has the characteristic blue USB 3.0 colored port, but the speeds are so horrific that I simply cannot justify spending $7.00 on one of them, and I'm sure not going to...

Inexpensive

-Too Slow: Consistently getting USB 1.1 speeds on this thing using a USB 3.0 front port on my rig; If I plug a 5400RPM external HDD into the same port I get decent USB 3.0 speeds hovering around 150Mb/s, but this "super fast" flash drive gets maybe 10Mb/s

This product looks good at a first look, but its declared space does not come even close to really available. I bought one for 32GB and in reality got 2.25MB. The only reason I bought this product for its cheap price, pretty good reviews and expected one time use, as a result was not able to use.

The Kingston 8GB DataTraveler G4 USB 3.0 Flash Drive [DTIG4/8GB] operates perfectly and permits rapid transfer of files, particularly photos.

Purchased two of these to use for images as back up, one for the actual image of the SSD & OS (12GB) and the other to make a bootable winpe to restore the image, seem to hit about 25MB/s so not the fastest, but they are only USB 2.0 and not 3.0.

This flash drive is ideal for portable memory applications, such as storing images, music and movies for use on a laptop during travel.

I bought two of these drives three weeks ago, and they have both failed. A set of read and write operations that used to take a few seconds now takes over 10 minutes. I have had two of the 16GB drives (Kingston 16GB USB 3.0 DataTraveler I G4 Flash Drive (Blue)) for 4 months and they are both fine.

I wish I knew the importance of a "Class 10" card (speed) before I bought my last 3 memory cards. I replaced the "Class 4" in my Smartphone with this one and I no longer notice the delay between snaps when I take pictures.

Fast

Super WoW! shipment! Two Days! Very useful product. Hoping NOW my Doggie Hammock gets here because I ordered all of these together, several days ago!

The 16gb micro sd card can fit in many devices such as many mobiles, consoles, mp 3 players and mcuh more. It is a great product and only recommend it to anybody eho either likes a lot of music, a lot of games or likes to store alot of things on there androids and stuff like apps!

Reliability

I purchased the 32GB micro SD card to extend the memory in my newly purchased smart phone (HTC Desire X). I would recommend this to anyone with a smart phone who wants to maximise its storage capacities.