The RD9700 is a USB 2.0 to Fast Ethernet controller chip manufactured by (often misattributed to other brands, but driver support comes from a similar generic pool). It allows a computer without an Ethernet port (like many Ultrabooks, tablets, or mini-PCs running Windows 11) to connect to a wired network via a USB port.
, which is frequently cited as working for Windows 11 64-bit. : Community-hosted RD9700 drivers The RD9700 is a USB 2