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Blue cable with USB 3.0 20-pin and USB 2.0 9-pin connectors

Vszerda

Vszerda USB 3.0 20Pin to USB 2.0 9Pin Header Cable

SKU CH-9EFP-SM9B9

Converts a motherboard USB 3.0 20-pin header to a USB 2.0 9-pin connector for internal expansion

  • Connect USB 2.0 front-panel ports to a USB 3.0 20-pin header
  • Use existing USB 2.0 connectors with newer motherboard headers
  • Bridge USB 3.0 and USB 2.0 internal interfaces
  • Extend internal USB connectivity with 20-pin to 9-pin conversion

USB 3.0 20-pin to USB 2.0 9-pin adapter cable

This cable converts a motherboard USB 3.0 20-pin header into a USB 2.0 9-pin connection. It allows front-panel USB 2.0 ports to function on boards that only expose the newer 20-pin header. The converter bridges the pin-out difference without active electronics. It is intended for builders who need to connect legacy front-panel connectors to a modern header.

Build integration and constraints

The cable plugs directly into the 20-pin header and presents a standard 9-pin plug for the chassis cable. It requires no extra power or drivers and does not enable USB 3.0 speeds on 2.0 ports. Builders who need full USB 3.0 throughput from the front panel cannot use this adapter. It also does not add headers where the board provides none.

How it compares

Measured against everything we stock in USB Cords & Extension Cables, at today’s prices. Recalculated every night.

Price $15.99
Pricier than about 55% of the 15,227 comparable items (median $14.99).

Specifications

No published specifications for this item yet.

Questions about this item

What speed limit does the 20-pin to 9-pin header cable impose on a USB 3.0 device?

The cable converts a USB 3.0 20-pin header to a USB 2.0 9-pin header, so connected devices run at USB 2.0 speeds instead of USB 3.0 speeds.

Does the adapter draw extra power or generate heat when used continuously?

It is a passive connector bridge with no active electronics, so it adds no measurable power draw or heat during all-day operation.

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