19-Pin 20-Pin to Dual USB-A Female Adapter – USB 3.0/3.1

OULLX USB 3.0/3.1 Motherboard Header to Dual USB-A Female Adapter

Unlock two full-speed USB-A ports directly from your desktop motherboard's internal header. The OULLX 19-Pin/20-Pin to Dual USB-A Female Adapter is a slim, plug-and-play converter that turns any unused USB 3.0 or 3.1 internal header into two accessible USB-A female ports — perfect for builders, upgraders, and enthusiasts who want maximum connectivity without extra cables cluttering the case.

Made in Mainland China.

Key Features

• Universal Compatibility: Fits standard 19-pin and 20-pin USB 3.0/3.1 motherboard headers found on most ATX, Micro-ATX, and Mini-ITX boards.
• Dual USB-A Output: Provides two USB-A female ports in either vertical or horizontal orientation — giving you flexibility inside any chassis layout.
• High-Speed Data Transfer: Supports USB 3.0/3.1 speeds for fast, interference-free data transfer between your motherboard and connected peripherals.
• Super Slim Design: Ultra-compact form factor minimizes space usage inside the case and keeps airflow unobstructed.
• No Assembly Required: Simply connect to your motherboard header — no tools, drivers, or configuration needed.
• No High-Concern Chemicals: Built with materials free from high-concern substances for peace of mind.

Specifications

Who Is This For?

Whether you're building a new PC, repurposing an old rig, or simply want to add internal USB-A access to your existing setup, this adapter is a straightforward, cost-effective solution. It's also a great companion to other PC accessories — check out our 1/2" Drive 8-Piece Hex Short Socket Set – Vanadium Steel for your next build toolkit, or browse our 10-Pc Hex Nut & Bolt Extractor Kit for precision hardware work.

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Frequently Asked Questions

Q: Is this adapter compatible with USB 3.1 Gen 2 motherboard headers?

A: This adapter is designed for standard 19-pin and 20-pin USB 3.0/3.1 internal motherboard headers. Always check your motherboard manual to confirm your header pinout matches the standard 19/20-pin USB 3.0/3.1 specification before connecting.

Q: Can I use both USB-A ports simultaneously for data transfer?

A: Yes. Both USB-A female ports are active simultaneously, allowing you to connect two USB devices at once for high-speed, interference-free data transfer through your motherboard's internal USB 3.0/3.1 header.

Q: Does this adapter require any drivers or special software to work?

A: No. This is a purely passive hardware adapter — no drivers, software, or additional configuration are needed. Simply plug it into your motherboard's 19-pin or 20-pin header and it works immediately.

Q: What is the difference between the vertical and horizontal port orientations?

A: The adapter is available with USB-A ports positioned either vertically (ports face upward/outward) or horizontally (ports face to the side), giving you the flexibility to choose the best orientation for your specific PC case layout and cable management needs.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.