Comparing the Arlo VMB4540 and VMB5000 Local Storage: The VMB4540 supports USB storage, while the VMB5000 uses microSD cards up to 2TB. Wi-Fi Connectivity: The VMB4540 operates on 2.4 GHz Wi-Fi, whereas the VMB5000 supports dual-band (2.4 GHz and 5 GHz).
eBay