TheLostSwede
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So far it has been very quiet on the market when it comes to USB4 hubs, with most products being based on Intel Thunderbolt hardware costing Thunderbolt money. Realtek was demoing its RTS5490 "hub router controller" at Computex and it's as far as we're aware, the first USB4 hub IC that has been announced. The RTS5490 supports speeds of up to 40 Gbps and it has one upstreams and four downstreams ports. It's also backwards compatible with Thunderbolt 3 and USB 3.2 Gen 2x2 (20 Gbps), as well as slower USB standards. It also supports the USB PD 3.1 standard and should as such be suitable for docking stations that can deliver up to 240 W to a connected laptop.
It also has native support for DisplayPort 2.1 Alt mode and UHBR20 up to 80 Gbps for DisplayPort signals. The demo board only had an older MST controller, so it would be limited to DP 1.4, but hopefully some company is working on a DP 2.1 MST controller, as this is required to split off the DP signal to the physical ports from USB-C. We were not given any details on when the RTS5490 will be available in the market and pricing will obviously depend on what kind of extra features are being added by the device makers, as it's unlikely that the first products based on it will be simple hubs.
View at TechPowerUp Main Site
It also has native support for DisplayPort 2.1 Alt mode and UHBR20 up to 80 Gbps for DisplayPort signals. The demo board only had an older MST controller, so it would be limited to DP 1.4, but hopefully some company is working on a DP 2.1 MST controller, as this is required to split off the DP signal to the physical ports from USB-C. We were not given any details on when the RTS5490 will be available in the market and pricing will obviously depend on what kind of extra features are being added by the device makers, as it's unlikely that the first products based on it will be simple hubs.
View at TechPowerUp Main Site
