The Synology DS1623xs+ leaves room for 10GbE SFP+ expansion

Out of the box the DS1623xs+ gives you four 1GbE RJ-45 ports, but the real story is the optional 10GbE SFP+ slots via an add-on card. It also includes two USB 3.2 Gen 1 ports for external drive connections. That SFP+ upgrade path means you’re not stuck with Gigabit forever — you can bump up to 10GbE when your infrastructure catches up.