Intel® RealSense™ cameras work best when the system's USB drivers are up to date. Use the Intel® Driver Update Utility to detect which driver updates are relevant to your computer. This may not always fix your RealSense connectivity issues but it may help.
Intel provides generic versions of drivers for general purposes. Your computer manufacturer may have altered the features, incorporated customizations, or made other changes to your driver. Intel recommends you contact your computer manufacturer for the latest system specific updates and technical support information.