Realtek RTL8159 10GbE to USB 3.2 adapters sell for about $55 and up

Realtek unveiled low-cost, low-power 10GbE RTL8127 (PCIe) and RTL8159 (USB 3.0) controllers at Computex 2025. Since then, we noted that RTL8127-based M.2 and PCIe 10GbE cards had already launched for as low as $35. However, a new X post by Jeff Geerling reminded me it was time to check on those RTL8159 10GbE to USB 3.2 adapters. So let's do that now, starting with the Wisdpi WP-UT9 mentioned in the post/tweet. Wisdpi WP-UT9 WisdPi WP-UT9 specifications: Chipset - Realtek RTL8159 Ethernet - Up to 10GbE RJ45 port; backward compatible with 5 Gpbs, 2.5 Gbps, 1Gbps, and 10/100Mbps Ethernet USB - USB 3.2 Gen2 Type-C port; backward compatible, but slower ports will impact performance; USB hubs/docks and long cables are not recommended either Misc - 2x LEDs - Amber (Link) / Green (Activity) Power Supply - Via USB-C port Dimensions - 59 x 29 x 13 mm Weight - 58.8 grams