The new SHIELD TV supports external USB flash drives and hard drives. To maximize speed and performance, NVIDIA recommends the drives listed below. If you have a Network Addressable Storage (NAS) you can connect your SHIELD TV over the network to access your shared content.
To expand your internal storage for apps and games, your USB drive will need to be set up as internal storage. Go to Settings -> Storage & Reset -> Select the drive name, then select the “Set up as internal storage”.
The following USB flash drives are recommended USB storage devices for SHIELD TV products.