If you have been following Realtek, they had announced a new family of multi-gig, 2.5 Gbps-enabling chips in June, to be integrated in all manner of consumer electronics in the short run.
The family of controllers are of the integrated ASIC type with self-contained firmware and self-contained, single-chip solutions. The 2.5 G push will be spread out across three chips: the RTL8125 PCIe 2.0 x1 controller for PC applications; the RTL8156 USB 3.1 controller for dongles and docking applications; and the RTL8226 transceiver for routers and switches.
Realtek is credited to plays in the high-volume, low-cost market, and slower adoption rates in the mainstream market are par-of-the-course. As a matter of fact, the Realtek 2.5G Ethernet controllers are being piloted on ASRock’s new Z390 Phantom Gaming series motherboards.