Amazon.com: CY 2 Ports USB 3.0 Female to Motherboard 20pin Header Cable for Front Panel 20cm : Electronics
Cablecc USB 3.1 Front Panel Header to USB 3.0 20Pin Header Extension Cable 20cm for ASUS Motherboard : Electronics
Usb 2.0 header into 3.0 on case - Super User
Discussion - Stuck fronpanel USB 3 cable to motherboard header | Tom's Hardware Forum
Amazon.com: StarTech.com 2 Port USB 3.0 A Female Slot Plate Adapter - USB 3.0 motherboard Adapter - USB 3 plate - USB 3.0 header Adapter (USB3SPLATE) : Electronics
USB 3.0 Motherboard 20 Pin Header Extension Adapter Cable, USB 20-pin Connector Female to Female USB3 Extender Cable-1.64FT - Newegg.com