That only allows DNS-based blocking of domains, which isn’t going to be nearly as effective. A lot of modern ads are served up from the same domain that you’re visiting. Browser-based ad-blocker extensions are in a position to block domains, URLs, and specific parts of the HTML DOM itself. This is going to sound rude, and I’m sorry in advance, but when people bring up pi hole, I assume they aren’t very knowledgeable about how things work.

Is this a USB Ethernet adapter for one of those weird older devices that used 2.5mm for USB?