Add connectivity to your USB devices Some computers with USB Type-C only offer one USB-C port for external connectivity, which will not connect with your existing USB Type-A devices. For added versatility, the network adapter supports a range of convenient features, such as Wake-On-LAN, VLAN Tagging, Crossover Detection and Auto-Correction (Auto MDIX), Checksum Offload (IPv4, IPv6, TCP, UDP), and Large Send Offload. This saves you time by making it easier to access very large files over your network at Gigabit speed.

Powerful Gigabit network connections The network adapter leverages the 5Gbps speed of USB 3.0 (also known as USB 3.1 Gen 1) to deliver the full bandwidth of your Gigabit network connection, without bottlenecks. It's a great companion for your MacBook, Chromebook Pixel™, Dell™ XPS™ 12, Dell Latitude™ 12 7000 Series 2-in-1 or another device that has a USB Type-C™ port. This Gigabit Ethernet network adapter gives you access to two reliable GbE ports, and without having to install drivers. Some vendors say that they will not work with the M1 (yet).Now, you can add wired network access through the USB-C™ or Thunderbolt™ 3 port on your laptop or desktop computer, and connect to your USB 3.0 (Type A) devices with ease. macOS includes several drivers for Aquantia Chips (at least the Intel version of macOS). Only solution is thunderbolt, but that's expensive (either Apple's Thunderbolt 3 -> Thunderbolt 2 -> Apple GbE adapter) or one of the various 10GbE adapters that use the Aquantia Chips. There are no other USB based GbE chips that I'm aware of on the market. They must be used with a proprietary driver as they didn't supported the CDC-ECM mode. Not sure whether Realtek will rework their driver, or just abandon the Mac platform for their drivers. Apple blocked the kernel APIs for USB based NICs in Big Sur (and replaced them with DriverKit userspace APIs). Realteak had a driver for macOS up to Catalina. ) is done by the CPU instead of the NICs hardware which a) causes high cpu load during high network activity and b) can cause instability with some implementations. In this state, there's no offloading which means: All the heavy lifting (checksumming. Instead, the NIC also supports basic CDC-ECM mode which macOS does have a driver (AppleUserECM) for. All those adapters (very likely) use the Realtek RTL8153 USB NIC.

Startech usb to ethernet mac driver