Amazon.com: EZDIY-FAB USB 3.1 Front Panel Header to USB-C Type-C Female Extension Cable-15inch -45cm (Speed up to 10 Gbps) : Electronics
USB 3.1 Gen 2 Internal Type E Front Panel Header to USB 3.1 Type C - MODDIY
USB 3.0 A Male To USB-C 3.1 Type C Female Screw Panel Mount Data Adapter Cable | eBay
USB 3.1 - C to C / Reversible C Connector - 877.522.3779 - USBFireWire.com
USB C Round Panel Mount Extension Cable : ID 4218 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
MP002448 - Multicomp Pro - USB Sealed Connector, USB Type C, USB 3.1
Dual 5Gb/s USB 3.1 Type-C & USB 3.0 Computer 3.5 inch Floppy Bay Front Panel 4 Ports USB Hub, USB3 19Pin to 2x USB 3.0 USB-C + 2x Type A Splitter Adapter - Newegg.com
USB-C to USB-C Feed-Thru Chassis Mount Barrel Connector
USB 3.1 Type-C + USB 3.0 Type-A 3.5" Front Panel with 20-pin Header
Redco USB-C Panel Mount Feedthru | Redco Audio
USB Type C Front Panel Mount USB-C Extension Cable USB 3.1 Data Video Cable Male to Female Extender Cord Connector with Screw