All-included: How to Turn Normal Hard Drive into NAS?
Turn external hard drives into network storage via USB with Addonics NAS adapter | ZDNET
USB 2.5Gb Ethernet Adapter, ULT-WIIQ USB 3.0 to 2.5 Gigabit RJ45 LAN Network Adapter
Hannord USB 3.0 to Ethernet Adapter, Driver Free 10/100/1000 Mbps Network RJ45 LAN Wired Gigabit Ethernet Adapter for Windows 10, 8.1, 7, XP, Linux, Mac OS, Chrome OS - Newegg.com
The Best USB NAS Adapters
The QNAP QNA-UC5G1T USB 3.0 to 5Gbe Adapter for NAS and PC – NAS Compares