portable driver backup tool
Double Driver Backup Tool for USB

Double Driver is a Free Driver Backup tool for USB. It can be used to view all of the drivers installed on your computer. You can then proceed to backup drivers, restore drivers, save drivers, or print a list of chosen drivers. Installed driver details such as setup information, hardware ID, version, date, provider and class are displayed and can be printed for reference.
Driver Backup Tool - DriverBackup!

DriverBackup! is a versatile driver backup and restore utility that allows Windows users to create reliable backups of their hardware device drivers. This free, open source, and portable driver backup tool preserves drivers for a wide range of hardware components, including graphics cards, sound devices, network adapters, and peripheral devices. By saving drivers to a user-specified location, you can quickly reinstall them when needed, ensuring your system runs smoothly after a reinstallation, driver update, or hardware change.
DriverGrabber Portable Driver Backup

DriverGrabber is a lightweight, portable Windows utility designed to help users easily create a driver backup of essential third party system drivers. Whether you're planning to reformat or reinstall Windows, this tool ensures you have all the necessary hardware-specific drivers ready for reinstallation, saving you the hassle of searching for them manually after setup.