MHUB 100A matrices have a USB A port on the front panels in the bottom right corner.
With MHUB PRO models you can enable DHCP from the MENU button on the front panel by holding it down for 3 seconds. For MHUB 100A models you need to follow Guide 1, for newer MHUB U models follow Guide 2 and for older MHUB U (micro USB on front) models use Guide 3.