Hello, and welcome. My name is Nathan, and I’ll be assisting you today. My livelihood depends on your positive feedback, so your satisfaction is my highest priority. Let’s get started!
Hi there, do you have a wifi dongle already?
If not, you'll need to purchase one, specifically you need a certain model that works with your box,
Here is the part you need:
Humax WLAN WiFI 11n 150Mbps USB Dong... (click for link)
However, wifi is not the best method to use here, if you have the option available, you would get far better performance with a direct wired ethernet connection from the back of the box to your router.
If the router is too far away for that, you can instead consider a powerline ethernet adapter, it basically creates a wired connection using the power lines in your home. It will be a faster and more reliable connection.
Here is an example:
TP-Link PA411KIT AV500 500 Mbps (click for link)