The HP now called HPE LTO Ultrium Universal Cleaning Cartridge C7978A is designed for use in all LTO Ultrium drives including; LTO-1 or LTO Ultrium 1, LTO-2 or LTO Ultrium 2, LTO-3 or LTO Ultrium 3, LTO-4 or LTO Ultrium 4, LTO-5 or LTO Ultrium 5, LTO-6 or LTO Ultrium 6, LTO-7 or LTO Ultrium 7, LTO-8... See More