Fellow MVP Greg Ramsey has put up a really great post on injecting drivers from USB during a Task Sequence.
ConfigMgr OSD does a great job of injecting drivers ‘on the fly’ into your OS Deployment process. For example, you can create task sequence steps with conditional statements to apply drivers for a specific model. That’s great for your standard build, but how do you handle those one-offs, those non-standard builds? Here’s a process that you can you for those non-standard builds, or for that hardware that you’re testing, but haven’t quite committed to being a standard yet. All we need is a vbScript, raw drivers, and an additional step in your task sequence (haven’t tested with MDT, but should work there as well). The following process ONLY works on Windows 7 and Windows Server 2008 R2. If there is enough demand, I’ll create a similar script for previous Operating System versions.