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Green circuit board with silver USB-C port and low-profile metal bracket

RIITOP

RIITOP PCIe 4x to USB 3.2 Gen 2x2 Type-C 20Gbps Card Adapter with Low Profile Bracket

SKU CH-WJY4-TBWNG

Adds a USB-C 20 Gbps data port via PCIe 3.0 x4 using an ASMedia ASM3242 controller, compatible with Windows, Linux and macOS

  • External USB portsBuffer 104161
  • Product typePCIe Card
  • Adds a 20Gbps USB-C port for fast NVMe drives
  • ASMedia ASM3242 controller delivers full Gen 2x2 bandwidth over PCIe 3.0 x4
  • Fits full-height and low-profile slots with both brackets included
  • Works on Windows, Linux and macOS with automatic drivers from Windows 8
  • Backward compatible with USB 3.1, 3.0 and 2.0 devices

USB 3.2 Gen 2x2 add-on card

This PCIe card adds a single USB-C port running at up to 20 Gbps to a desktop computer. It uses an ASMedia ASM3242 controller over four PCIe 3.0 lanes and fits both full-height and low-profile slots with the included brackets. The card works with Windows, macOS and Linux, installing drivers automatically on Windows 8 and later. It is intended for users who need fast external storage access on a system that lacks a native 20 Gbps USB-C port.

Bandwidth and protocol limits

The port delivers up to 20 Gbps using the USB 3.2 Gen 2x2 standard and is backward compatible with USB 3.1, 3.0 and 2.0 devices. It provides data transfer only and does not support Power Delivery, DisplayPort alt mode, audio or video output. A PCIe 3.0 x4 slot is required for full speed; the card will also operate in a PCIe 2.0 slot at reduced bandwidth. Buyers who need to charge devices or drive a display from the same connector cannot use this card for that purpose.

Build and daily use

The board mounts in a standard PCIe x4, x8 or x16 slot and ships with both a full-height and a low-profile bracket for flexible case fit. The single Type-C connector faces the rear panel, leaving no internal cables to route. Because the port is strictly for data, attached SSDs or hard drives must receive power from their own enclosures or adapters. The low-profile bracket allows installation in slim chassis where a full-height card would not fit.

How it compares

Measured against everything we stock in PCIe Expansion Cards, at today’s prices. Recalculated every night.

Price $28.99
Typical for this category: the median of 891 items is $30.99.

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Specifications

Product
Product typePCIe Card
Ports & slots
External USB portsBuffer 104161

Questions about this item

Should I install the full-profile or the low-profile bracket?

The card ships with both brackets; choose the low-profile bracket for slim cases and the full-profile bracket for standard ATX chassis.

What does the 20 Gbps rating mean when I plug in an NVMe drive?

The ASMedia ASM3242 controller uses four PCIe 3.0 lanes to deliver up to 20 Gbps of raw bandwidth, so a fast NVMe drive can saturate the link.

Which PCIe slot version do I need for full speed?

A PCIe 3.0 x4 slot provides the four lanes required for 20 Gbps; the card also works in PCIe 2.0 slots at reduced throughput.

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