Hello,
Is your device recognized by Windows then only can it be recognized by Backup Exec
Also please check if your device is tested from the hardware compatibility list given below
(title) Backup Exec 9.x for Windows Servers Robotic Library Hardware Compatibility List (HCL) (includes tested drives
http://support.veritas.com/docs/271383
(title) Backup Exec 9.x for Windows Servers Standalone Drives Hardware Compatibility List (HCL
http://support.veritas.com/docs/271382
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