The drivers are two different USB configurations. Fix: Your phone uses different USB profiles. Install the Universal ADB Fastboot Driver by Koushik Dutta (ClockworkMod). This covers 99% of edge cases.
This article is your definitive resource. We will dissect what this driver is, why it’s different from standard USB drivers, how to install it correctly, and how to troubleshoot every possible failure mode. qualcomm adb fastboot driver
You may need the Qualcomm ADB Fastboot Driver for various reasons: The drivers are two different USB configurations