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Two short black cables with a wide 19-pin plug on one end and a smaller 9-pin socket on the other

flame unicorn

flame unicorn USB 3.0 to USB 2.0 Motherboard Adapter Cable 19 Pin to 9 Pin 15cm 2-Pack

SKU CH-FCHA-9KAX9

Connects a 19-pin USB 3.0 header to a 9-pin USB 2.0 motherboard connector at up to 4.8 Gbps, 15 cm length, two-pack

  • Connector TypeMini USB to USB A
  • Connect front-panel USB 3.0 ports to a 19-pin motherboard header
  • Backward compatible with USB 2.0 9-pin headers for legacy boards
  • Supports up to 4.8 Gbps throughput with USB 3.0 devices
  • Braid-and-foil shielding protects signal integrity
  • 15 cm length keeps internal routing tidy

USB 3.0-to-2.0 header adapter cable

This 19-pin to 9-pin adapter cable lets you connect a USB 3.0 front-panel header to a USB 2.0 motherboard header. It is designed for PC builders who need to link a modern front-panel connector to an older or header-limited board. The 15 cm length suits tight internal routing. The pack contains two cables for dual-port panels.

Practical limits of the USB 2.0 header

When plugged into a USB 2.0 header the link runs at 480 Mbps, not the 4.8 Gbps the USB 3.0 side can support. The adapter is fully shielded with braid-and-foil construction and uses moulded strain relief for durability. It complies with the rated cable specification and uses 8b/10b encoding with LFSR scrambling. Throughput is therefore capped by the slower header.

Header gender and pin count decide fit

The cable presents a 19-pin USB 3.0 male connector on one end and a 9-pin USB 2.0 female connector on the other. Verify that your motherboard provides a 9-pin USB 2.0 header and that your front panel or device terminates in a 19-pin USB 3.0 plug. Builders needing a 19-pin header on the board side or a different gender arrangement cannot use this adapter.

Highlights

  • Connect front-panel USB 3.0 ports to a 19-pin motherboard header
  • Backward compatible with USB 2.0 9-pin headers for legacy boards
  • Supports up to 4.8 Gbps throughput with USB 3.0 devices
  • Braid-and-foil shielding protects signal integrity
  • 15 cm length keeps internal routing tidy

Specifications

Connector TypeMini USB to USB A

Questions about this item

Should I use the 15 cm cable or a longer one?

The 15 cm length is designed to reach from a motherboard USB 2.0 9 pin header to a front panel USB 3.0 19 pin connector inside the case.

What does the 4.8 Gbps figure mean for my USB 2.0 header?

The adapter is built to USB 3.0 specification supporting up to 4.8 Gbps, but the USB 2.0 9 pin header limits actual throughput to 480 Mbps.

Will the 19 pin to 9 pin connection work with my motherboard USB standard?

Yes, it converts a USB 3.0 19 pin header to a USB 2.0 9 pin header, fully compliant with the rated cable specification and shielding.

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