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Black 12 cm adapter cable with USB 3.0 20 pin male to USB 2.0 9 pin female connectors

ETopSell

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

SKU CH-B44W-37CPG

Connects a USB 3.0 20-pin device to a USB 2.0 motherboard header at 480 Mbps over a 12 cm cable

  • Connection typeUSB A to USB B
  • Product colorBlack
  • Connect USB 3.0 20 pin devices to USB 2.0 motherboards
  • 12 cm cable fits tight internal spaces
  • Light 6 g weight adds minimal strain to headers
  • Black connectors match standard motherboard colour schemes
  • 480 Mbps data rate for USB 2.0 operation

Purpose and compatibility

This adapter cable connects a USB 3.0 20-pin internal header to a USB 2.0 9-pin motherboard connector. It is intended for builders who need to attach front-panel USB 3.0 devices such as optical-drive panels or floppy-drive panels to older mainboards that lack a native USB 3.0 header.

Sustained-load behaviour

The link operates at USB 2.0 speeds, so data throughput is limited to 480 Mbps even when a USB 3.0 device is attached. Under continuous transfer the connection remains stable at this reduced bandwidth without the higher rates a native USB 3.0 header would provide.

Deciding specification

The cable bridges a 20-pin USB 3.0 male housing to a 9-pin USB 2.0 female header in a 12 cm length. If your motherboard only offers the 9-pin USB 2.0 header, this adapter makes the device usable; if you require full USB 3.0 performance, a board with a native 20-pin header is necessary.

How it compares

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

Price $6.99
Cheaper than about 93% of the 15,227 comparable items (median $14.99).

Specifications

Product
Product colorBlack
Ports & slots
Connection typeUSB A to USB B

Questions about this item

Does the 12 cm cable add heat or power draw when a USB 3.0 20 pin device runs all day on a USB 2.0 motherboard?

The adapter is passive and draws no extra power; the 480 Mbps link runs at USB 2.0 speed so the device stays cool during continuous use.

Must the motherboard already have a free USB 2.0 9 pin header for this adapter to work?

Yes, the female 9 pin connector plugs directly into a standard USB 2.0 header; no other ports or controllers are required.

Will a legacy USB 2.0 9 pin front-panel port still function if I keep it alongside this 20 pin adapter?

The adapter occupies one USB 2.0 header only; any additional 9 pin headers on the board remain fully operational for older panels.

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