This device will work when plugged into a regular USB port on the Pi Zero. I've tried powering on the device and using a USB hub and Ethernet through the RPi's power port, but that didn't work. So keep in mind that you will still need a separate power supply for your Raspberry Pi Zero. The good news is that if your power supply is 5.0V 2A, you probably don't need the included power cord. That should be enough to power both the Pi and the devices connected to your USB hub.
π StarTech.com NETRS232 Serial to IP Ethernet Device Server - DIN Rail Mountable - Serial Device Server - Serial Over IP Device Server (Black)
4 Review
π USR-TCP232-410s: RS232/RS485 Serial to Ethernet Adapter/IP Device Server with DHCP/DNS Support
4 Review
UGREEN USB 3.0 Ethernet Adapter Hub with RJ45: Fast Gigabit Ethernet Converter, 3 Ports USB 3.0 Hub Compatible for MacBook, iMac, Surface Pro, Chromebook, Laptop, PC
11 Review
HB-UMLS Sabrent USB 2.0 Hub with 4 Ports and LED Power Switches for Each Port
12 Review