Driver [better] - Unitek Y-3322

Windows 7 lacks native USB 3.0 support. Even if the hub works at USB 2.0 speeds, you need the generic USB 3.0 driver:

: Plug in the included 12V/2A power adapter . This is required for 3.5" desktop drives to spin up.

Note: Sometimes manufacturers group drivers by chipset rather than model number. If you cannot find Y-3322 specifically, look for drivers related to "USB 3.0 Hub" or "Gigabit Ethernet" in their generic download section.

This process fixes 90% of “driver-related” complaints for the Y-3322.