Digital Frames Direct A Good Little Frame For The Price USB Thumb Drive Supposed To Work With Digital Photo Frame?

USB thumb drive supposed to work with digital photo frame? - digital frames direct a good little frame for the price

I bought a Curtis Digital Photo Frame DPF712 for a Christmas present, but not read the USB stick plugged into the USB port. He read the card, digital camera directly from the camera, but does not detect when the USB drive inserted. Is it planned? Or is the USB port is not for any other reason? Or is the machine is broken?