how can I connect an external hdd/flash storage thru usb-c port of sagemcom TMobile home internet gateway to be accessed wirelessly in home by wifi?

@Hpanda, one cannot access an external hard drive or flash drive connected to the USB-C port on any of the TMO HI 5G gateways.  If you have a router connected to your gateway, you would be able to wirelessly access a HDD plugged in the USB port.  The USB port on the gateway can be used as a power source (say, for a small fan to cool the gateway).