Buy USB 2.5Gb Ethernet Adapter, ULT-WIIQ USB 3.0 to 2.5 Gigabit RJ45 LAN Network Adapter Cable, 10/100/1000/2500M Full Speed NIC for Mac OS, iOS, Windows, Linux, Dell XPS, Thinkpad X, Synology NAS,
Proof of concept: 2.5 Gbps USB Ethernet adapter working on a Synology DS918+ : r/synology
Synology E10G21-F2 SFP+ Adapter for Synology NAS Servers | E10G21-F2 | $ 269.99
Connect Synology NAS Directly to PC or Mac Over Ethernet
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