The Brother HL-L2370DW name tells you it's wireless and duplex — but there's no Ethernet

The “DW” in the model name stands for Duplex and Wireless, and that’s exactly what you get. It has USB 2.0 and built-in Wi-Fi (b/g/n) with Wi-Fi Direct support, but no Ethernet port. For a compact mono laser printer, the wireless focus makes sense — it’s designed for a desk, not a server room.