With more LAN ports you are able to connect more computers to the network directly using LAN cables.
Asus GX1008B V4
A WAN (Wider Area Network) port is most commonly used to connect the router to the Internet. It can also be used to connect to an external private network.
When covered under the manufacturer’s warranty it is possible to get a replacement in the case of a malfunction.
With more USB ports, you are able to connect more devices.
A higher maximum Wi-Fi speed results in better performance. This is measured in megabytes per second.
Asus GX1008B V5
Static IP addresses remain consistent on each connection. This means the IP address can be used to allow remote access/configuration. Most home devices have a dynamic IP address, whereas larger companies usually use a static IP address.
WPA2-PSK is a method of securing your network using WPA2 (Wi-Fi Protected Access 2) as well as a Pre-Shared Key (PSK) password. This was designed for home users without an enterprise authentication server.
Static routing is a simple form of routing, recommended if you have just one, or a small number, of routers to connect. They need to be configured and updated manually.