The SM3265AC is a USB 3.0 Single-Channel controller. Let’s translate that:
While I couldn't find an official datasheet or documentation, here are some possible features that might be associated with the SM3265AC Exclusive: sm3265ac exclusive
Look for the Chip Part No. field. A standard chip reads SM3265AC - ISP 170512-1AB . An Exclusive will read SM3265AC - ISP Ex-190114 . The SM3265AC is a USB 3