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Green circuit board with silver heatsink and one USB-C port on metal bracket

SMUGDESK

SMUGDESK PCIe 3.0 X4 to USB 3.2 Gen2x2 Type-C 20Gbps Expansion Card usb converter

SKU CH-YRZA-8V750

Adds a 20Gbps USB 3.2 Gen2x2 Type-C port via PCIe 3.0 X4 for high-speed NVMe SSD and 4K video workflows

  • Adds a 20Gbps USB-C port via PCIe X4 slot
  • ASMedia ASM3242 chip delivers steady 20Gbps bandwidth
  • Passive aluminum heatsink keeps the card cool under load
  • Works driver-free on Windows 10, 11, Linux and macOS
  • Fits X4, X8, X16 slots and works in PCIe 2.0 motherboards

Single 20Gbps USB-C port addition

This SMUGDESK expansion card adds one external USB 3.2 Gen2x2 Type-C port to a desktop motherboard through a spare PCIe 3.0 x4 slot. The ASMedia ASM3242 controller delivers up to 20Gbps bandwidth for external NVMe SSD transfers, RAW video offloads and 4K footage workflows. A passive aluminium heatsink and gold-plated contacts support sustained high-load operation. Driver-free installation works natively on Windows 10, Windows 11, Linux and macOS.

Suits creators and DIY builders needing one fast

The card targets users who want a single high-speed USB-C connection for portable NVMe storage or docking stations on ATX, micro-ATX or mini-ITX systems. It fits x4, x8 or x16 slots and is backward compatible with PCIe 2.0 motherboards for older platform upgrades. Builders requiring multiple new Type-C ports or internal header connections will not find those features here. Systems without a free PCIe slot cannot use this adapter.

ASMedia ASM3242 controller for 20Gbps USB 3.2 Gen2x2

The onboard ASM3242 chip provides a dedicated 20Gbps USB 3.2 Gen2x2 Type-C lane, which is the specification that determines whether the card matches the speed ceiling of a high-performance external NVMe enclosure. The port remains backward compatible with 10Gbps and 5Gbps USB-C and USB-A peripherals such as card readers and hubs.

How it compares

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

Price $23.99
Pricier than about 80% of the 1,430 comparable items (median $14.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What PCIe standard does the card use and what bandwidth does it deliver?

The card uses PCIe 3.0 x4 and delivers up to 20Gbps bandwidth via USB 3.2 Gen2x2.

Which motherboard slots and chassis brackets does the card support?

Fits PCIe x4, x8 or x16 slots; includes a full-height bracket with a low-profile option for ATX, MATX or ITX cases.

How is the card installed and what step is often missed?

Insert into a spare PCIe slot, secure the bracket screw, and ensure the OS is Windows 10/11, Linux or macOS for driver-free operation.

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