This is my first post to a forum so I will try to get all of the pertinent info in this. I purchased 3 USB drives from Amazon. This is the drive I purchased: http://www.amazon.com/gp/product/B00FE2N1WS?keywords=usb%203.0&qid=1453410926&ref_=sr_1_11&sr=8-11 . These are all the 128 gb drives.
2 of these drives work great, and get speeds up to 70/mbps transfer speed. Unfortunately, one of the 3 drives only gets 30 mbps transfer rate. I have tried using the same port, transferring the same file(s). I have completely mimicked what worked for the other 2 drives with the 3rd drive, so what ever is wrong is in fact wrong with the drive itself and not the pc I am using. All pc drivers are up to date, including all usb port drivers, and yes I am using a usb 3.0 port on the pc. One other thing I found peculiar about this 3rd drive which is not working that differs from the others is if you go to format the drive, the only options are NTFS and ExFat (Default). There is no Fat32 option. None the less, I have used a 3rd party software and DOS to format the drive to Fat32, but it still runs at 2.0 speeds, as it did before formatting to Fat32.
I am unable to return this device and get a new one, so since I am stuck with it, I would like to (if possible) fix the problem and utilize it. If not, oh well, but I wanted to make sure I tried.