For some reason slow write speeds

The flash drive has a slow write speed despite the available and fully functioning USB 3.0 port on my neighbors desktopPC. I am currently transferring 20 GB of data, without any increase to the expected 40 mb/s speeds as advertised. Reasons?

Back-up Vault is horrific

Do not, I repeat do not, use the back-up Vault whatever it is called. I followed the 12 page pdf directions & set-up "My Vault" and tried to copy about 12 GB of photos.

Lightweight

Difficult Setup; Poor Interface

Fail on first use

I loaded a number of files on the flash drive and the first time that I tried to review the files, I could not access the drive, then could not even erase and reformat the drive. Costco's return policy has been great.

costco return policy

flash drive failed

Deceptive advertising

This flash drive boasts "up to 4 times faster than USB 2.0" speed, but what they don't tell you, is that it only means the 'READ' speed! This thing is not ONE BIT faster on WRITE (copying files TO the device!) than any USB 2.0 device when using a USB 3.0 enabled plug.

not excessively expensive; (less than 14 dollars

very slow write speed even with usb 3.0

SanDisk Ultra USB Flash Drive

SanDisk has been a leader in the storage industry for more than 20 years. Founded in 1988 by Dr. Eli Harari, the company has grown to become the world's largest supplier of flash memory data storage products.

Good performance for a USB 2.0 flash drive; SecureAccess software protects files in encrypted; password-protected "vault; USB connector protected by sliding mechanism; Compatible with Windows XP/Vista/7 and Mac OS X; Nice looking; lightweight design; Five year warranty; Reasonably priced

10 MB/s write speed only applies to the first 20 MB of the data transfer; Includes only 2GB of online storage