Do i need to install a driver for usb-ethernet adapters?

If i need a driver is there a universal one i can install, or is this hardware specific? I have a ugreen adapter, that seemed like a more popular one so it would be supported.

Unlike other distros which come with many drivers preloaded, OpenWrt is stripped down to 4MiB to fit cheap Wi-Fi router. You need the driver for it to work. The drivers come as loadable kernel modules.

The operating system cares about the ethernet controller (such as Realtek), not the brand of your adapter (Ugreen) -- just like how we care about the Intel/AMD CPU inside a PC instead of the PC being Dell or HP, which is only meaningful for dumb users.

I don't know what the best way to detect the kernel module needed is. What I usually do is to plug the adapter into my Ubuntu PC, then use lspci or lsusb to see which kernel module is being used by Ubuntu. OpenWrt likely uses the same name.

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lsusb returns

ASIX Electronics Corp. AX88179 Gigabit Ethernet

How do i find the driver for that?

edit: searched openwrt AX88179 and found

Guess its supported

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