This is an ultrium2 device. It should work with the veritas halfinch.sys (v 5.1.1.1)
Normally the hotswap.exe from your ...\Backup Exec\NT directory must find this.
If it is a part of an autoloader library, see my post titled " IBM LTO3 3581-F3H =unknown mediachanger" - nobody answered my question there, but the description could be helpful for you.
Bye, Christian