MARHABA TV Box works best when you are getting 1.5 MBPS or more. You can connect to your router through the Ethernet wire or the wireless adapter (some models may have Wi-Fi or wireless adapter already built in the box).
The internet speed keeps changing, depending on service, time, and load on the network, but it should remain at least 1.5 Mbps to work properly (1Mbps speed may also work but the quality may suffer).