It is a multi-functional front panel with 4 USB2.0 interfaces. Convert an unused 3.5" floppy drive space into 4 USB 2.0 interface. Convert an unused 3.5" floppy drive space into 4 USB 2.0 interface.
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20Pin 5Port USB 3.0 Front Panel 5Gbps USB3.0 Hub Expansion Cable Adapter Metal Bracket for PC Desktop 5.25 inch CD-ROM Drive Bay
Aliexpress UK
Models GD04 Grandia. Type I/O Ports and Power Button.
eBay
3.5" 20Pin to 2 USB 3.0 Port HUB + HD Audio PC Floppy Expansion Front Panel
Aliexpress UK
Connect your USB 3.0 20pin device to the USB 2.0 motherboard or connect your USB 2.0 9pin device to the USB 3.0 motherboard. USB 3.0 20-Pin to USB 2.0 9-Pin Adapter Motherboard Front Panel Connector Converter.
eBay
NEW Internal Vertical Header Splitter USB Front Panel Adapter for Type C USB3.0 19/20Pin Male to Type-E Female Connector Adapter
Aliexpress UK
Product interface: USB2.0 9PIN AUDIO 9PIN. Floppy Bay Bracket: The front panel can convert the USB 9 Pin interface and audio into 2 USB 2.0 ports, 3.5mm headphone output jack and microphone interface, for the floppy bay position.
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2 Ports PCI Express USB 3.0 Front Panel with Control Card Adapter 4-Pin & 20 Pin
Aliexpress UK
It is a multi-functional front panel with 4 USB2.0 interfaces. Feature: 1. Convert an unused 3.5" floppy drive space into 4 USB 2.0 interface. Convert an unused 3.5" floppy drive space into 4 USB 2.0 interface.
eBay
PCI-E to USB 3.0 Expansion Card 5Gpbs Type E PCI Express Card 19/20 Pin Header for Type C Front Panel Mount Adapter
Aliexpress UK
Dual USB 3.1 Front Panel Socket Key-A Type-E to USB 2.0 9Pin Mainboard Header Male Cable Extension Adapter with magnetic pad. 1x 9PIN USB cable. The adapter is a converter to convert the available USB 2.0 header of a motherboard into a USB 3.1 header.
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New 1Pc Full Size Bracket Cord Wire Motherboard for PC 20pin To USB 3.0 Front Panel Header Connector Cable Adapter
Aliexpress UK
Connect your USB 3.0 20pin device to the USB 2.0 motherboard or connect your USB 2.0 9pin device to the USB 3.0 motherboard. USB 2.0 9-Pin to USB 3.0 19Pin(male) / 20 Pin(female) adapter. 1x Adapter.
eBay
NEW Motherboard USB2.0 9Pin to Type E USB C Front Panel Header Type-E Key-A to 9-Pin Connector Riser Adapter 480Mbps for Desktop
Aliexpress UK
Connect your USB 3.0 20pin device to the USB 2.0 motherboard or connect your USB 2.0 9pin device to the USB 3.0 motherboard. USB 3.0 20-Pin to USB 2.0 9-Pin Adapter Motherboard Front Panel Connector Converter.
eBay
USB 3.0 Type-E Front Panel Adapter 19/20Pin Header Motherboard Converter 5Gbps Data Transfer Plug & Play for Desktop PC
Aliexpress UK