USB 3.0 20-Pin Header Male to USB 2.0 9-Pin Female Adapter
Motherboard 2.0 to Case 3.0

Features:

USB 3.0 20-Pin Male
USB 2.0 9-Pin Female
Connects USB 3.0 computer case to a USB 2.0 Motherboard
Length: 4 inches / 10 cm

Package Included:
2 X USB 2.0 9Pin Female to USB 3.0 20pin Male Cable