Use the USB port to quickly and easily load firmware upgrades, back up the current settings, and restore settings to the TEC3000 by using a USB drive. The TEC3000 can recognize eight configuration files or firmware package files. The USB drive format must be FAT or FAT32. The drive cannot be NTFS format or USB 3.0. If you are upgrading firmware or copying configuration files, you need the passcode if one has been set up. Do not remove the USB drive until the firmware upgrade is complete. The TEC3000 may restart and go offline to the network engine after a firmware upgrade. The upgrade takes approximately three minutes.