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Black 4-inch adapter cable with USB 3.0 20-pin female to USB 2.0 9-pin male connectors

Vszerda

Vszerda USB 3.0 20-pin to USB 2.0 9-pin adapter cable 4 inches

SKU CH-24ZN-GE386

Connects a USB 2.0 9-pin or 10-pin device to a motherboard USB 3.0 20-pin header at 480 Mbps over a 4-inch cable

  • Connect USB 2.0 devices to USB 3.0 headers
  • 480 Mbps transfer speed meets USB 2.0 spec
  • 4 inch cable fits tight case spaces
  • 9-pin male to 20-pin female connector
  • Compatible with drive panels and floppy panels

Adapter for USB 2.0 devices to USB 3.0 headers

This adapter cable connects a USB 2.0 9-pin device to a motherboard USB 3.0 20-pin header. It enables the use of front-panel drive bays or similar peripherals that only have the older internal connector. The cable measures 4 inches in length. It is intended for builders integrating legacy internal USB hardware into newer systems.

Sustained transfer limited to USB 2.0 specification

Data transfer operates at up to 480 Mbps, matching the USB 2.0 standard. The adapter does not upgrade the connected device to USB 3.0 speeds; throughput remains at the 2.0 ceiling during continuous use. Performance is consistent with the specifications of the attached peripheral and header. No active conversion or signal boosting is performed by the cable.

Check header type and device pin count before

Verify that the motherboard provides a 20-pin USB 3.0 internal header and that the peripheral uses a 9-pin USB 2.0 plug. The adapter will not fit 10-pin USB 2.0 headers or devices requiring a 20-pin USB 3.0 connection. Ensure the 4-inch reach suits the internal routing between header and device. Buyers needing to connect USB 3.0 front-panel ports or devices with different pin layouts cannot use this cable.

How it compares

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

Price $16.99
Pricier than about 60% of the 15,227 comparable items (median $14.99).

Specifications

No published specifications for this item yet.

Questions about this item

Does the 4-inch cable generate noticeable heat when a USB 2.0 device runs at 480 Mbps all day?

The adapter is a passive cable with no active electronics, so it produces no measurable heat during continuous 480 Mbps transfers.

What motherboard header must my system already have for this 20-pin female connector to plug in?

Your motherboard needs a spare internal USB 3.0 20-pin header; the cable’s female end mates directly with that header.

Will a legacy 9-pin USB 2.0 front-panel device work at full 480 Mbps through this 20-pin adapter?

Yes, the adapter meets the USB 2.0 specification, so a 9-pin device connected to the 20-pin header will operate at up to 480 Mbps.

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