GIGABYTE Unveils USB 3.2 Gen 2x2 20 Gbps PCIe Expansion Card

@ 2019/12/02
GIGABYTE has introduced the industry’s first PCIe expansion card for USB 3.2 Gen2x2 ports. Offering the latest generation in USB connectivity, with a total throughput of 20Gbps, the board adds a single Gen2x2-capable USB-C port for systems to take advantage of the higher throughput USB standard.

The GIGABYTE GC-USB 3.2 Gen 2x2 PCIe expansion card is based on the ASMedia ASM3242 host controller, which allows for data transfer rates of up to 20 Gbps (2.5 GB/s) when working with compatible devices. The same controller is used on various AMD TRX40-based motherboards and will likely be used on other platforms to enable the standard as well. The card relies a PCIe 3.0 x4 slot, and atypically for USB-C add-in cards, doesn't require an additional power plug to drive the card or attached peripherals.

As a quick refresher, the USB 3.2 Gen2x2 uses two high-speed USB Type-C Tx/Rx channels to achieve 20 Gbps maximum throughput. By doubling the number of USB high speed data channels in use, the 2x2 standard is a very straightforward extension of USB 3.2 Gen2, taking advantage of the additional high speed lanes offered in a USB-C cable. To date we've only seen these extra lanes used for alt mods (e.g DisplayPort and Thunderbolt), but the USB-C cable was always designed with this in mind, and now the necessary controllers are finally catching up.

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