NBU 7.5.0.5 Can't show SL150 Robotic Drive

Dear All,

We buy a new Backup library last week but I cant install on NBU 7.5.0.5, Windows Device Manager is found "Unknown Medium Changer" ( Windows Standard Drivers ) and two Driver installed driver, when I try to Define Robots and Drivers, NBU found one robotic Drive and two tape driver but it cannot add robot and I cant use library almost 5 days,

Master server is Windows 2008 R2 x64

Nbu 7.5.0.5

I attach screenshots which taken Define robots, drives and robots section