This adapter only supports 1 GbE link ex factory. The instructions on the box say to go to the D-Link support site to download the drivers. There are no drivers on the website. If you chat with a support agent, you will be directed to a site in Taiwan that contains Mac drivers for an older version of macOS. If you install these drivers, add security permissions, and reinstall them, you'll be able to connect with 1GbE only again. Attempting to force a port speed in Network Control before or after installing the driver only results in a list of connection speeds of 10, 100, and 1000, not 2500. Tried on multiple Macs with no success. Buy a Mac-enabled 2.5GbE adapter elsewhere.
TP-Link Archer T4U Plus AC1300 USB 3.0 WiFi Network Adapter
29 Review
Wi-Fi adapter D-link DWA-140, black
46 Review
High Gain Wireless Network Adapter - TP-Link Nano USB Wifi Dongle with 150Mbps Speed for PC Desktops and Laptops. Compatible with Win10/8.1/8/7/XP Linux 2.6.18-4.4.3, Mac OS 10.9-10.15 (TL-WN722N)
46 Review
Enhance Internet Speed with TP-Link AC1200 Wireless Dual Band USB Adapter (Archer T4U V1)
40 Review
🔌 StarTech.com NETRS232 Serial to IP Ethernet Device Server - DIN Rail Mountable - Serial Device Server - Serial Over IP Device Server (Black)
4 Review
🔌 CERRXIAN RS232 to Ethernet Serial Device Server - TCP/IP Converter with 1Port DB9 RS232 Serial to Ethernet Connectivity
3 Review
🔌 Juiced Systems Silver BizHUB USB-C Multiport Gigabit HDMI Hub with 3 USB 3.0 Ports, Gigabit Ethernet, 4K HDMI, SD/Micro SD, and USB-C Power Delivery
11 Review
🔌 uni USB C Hub with Ethernet Adapter, 4K HDMI, Gigabit Ethernet, and 3 USB 3.0 Ports for MacBook Pro, iPad Pro, XPS
11 Review