What type of formatting must be used when connecting a hard drive to the TV.
Android TVs are compatible with external Hard Disk Drives (HDD) or flash drives formatted in NTFS file system or the FAT32 file system.
IMPORTANT: When connecting a hard disk drive it is strongly recommended that the external drive has its own power source since each USB port on the TV has a power limitation of 5V~500mA. Refer to the operating instructions supplied with the external drive for more details.
NOTE: 4K Android TVs have 3 USB ports, one of these ports has a SS (Super Speed) labeled that supports 5V~900mA.