I have an Arris 1670A router which has a USB port on the back and I'd lie to replace my ethernet Network Attached Storage with a USB 3.0 external hard drive. But when I plug in the USB drive it doesn't show up in the router's client list. Is this USB port functional?
Arris provided the USB 2.0 port on the DG1670 series for "future support for external USB drives", but as far as I'm aware, they never released firmware to provide that functionality.
It would seem of using a TWC Spectrum-issued Gateway Cable Modem/Router instead of owned one. Because of this, the USB ports on them are disabled for some reason and only used to charge power devices such as a smartphone or tablet.
So in order to connect a USB Storage Drive for home network sharing, might need to invest in either option, but not both:
A gateway or router with Wireless-AC capability is recommended for broad range and speeds.