Samsung ML-2510 Series - Manual (Page 19)

4.2
<Network setup>
Installing an external wired network interface
server
The ML-2571N is equipped with wired network interface, allowing you to
use your printer on a network.
To use the ML-2510 and ML-2570 in network environments, you need to
buy an optional external wired network interface server. For order
information, see page 7.1.