Uses for a USB3 port: - An LTE dongle as a fallback for the wired upstream connection. - An SSD for quick onsite backup / mirror of the most important files.

Uses for a USB3 port: - An LTE dongle as a fallback for the wired upstream connection. - An SSD for quick onsite backup / mirror of the most important files. Nothing critical, and can work via USB2 at 480 Mbps, but USB3 would be nicer.