Imation Royal Guard 3490E Cartridge , 810MB 1100? Just as with Imation?s other 3480 tape line-up, the Royal Guard3490E 810 MB tape by Imation provides a proprietary back coating that repels error causing static electricity. Imation Royal Guard 3480 also features FlashGuard? which absorbs debris and protects against damage protecting the tape and your information by providing a trap for unwanted weld debris (also known as flash).