I'm upset because 1. I need this for work 2. This is supposed to be refurbished. There's 0% chance it was refurbished. Everything was fine until I realized that it didn't work unless it was plugged in. The second you unplugged it it would shut off. I have sent it back and am waiting another week for a replacement and am getting more and more backed up on my work while I'm waiting. I expected it to at least work. You'd think they would check these devices for basic functionality.