If you are using a motherboard with a built-in network adapter (like the Realtek 8201CL found on the MSI PM8M-V which is a Via P4M800) you don’t need to be looking for a driver for the 8201CL. Instead you need to look for the driver for the MAC chip embedded in the chipset. Ie. See your motherboard manufacturer specs and download area.
The Ethernet hardware consists of two parts: a PHY chip, and a MAC chip. It’s the MAC chip that requires the drivers. RTL8201x is a PHY only chip which does NOT need any driver at all. If you have RTL8201x in your computer system, there must be another MAC chip in the system too. Most likely, the MAC chip is embedded in the chipset. Please contact the board or computer provider to find out which MAC chip is in your system and how to get the drivers for it.
In my case the drivers needed to be for Realtek RTL8139/810x Family Fast Ethernet NIC.