The QNAP TS-431X2-2G NAS offers space for four hard drives. Also on board are a quad-core processor, 2 GB RAM and an SFP+ port. This allows the fiber connection to your network with 10 Gbps. This puts Qnap ahead of almost all Synology models in this type of connection. Especially with four hard drives, this connection makes sense, since even an average hard drive can reach 100 MB/s transfer speed and fully utilize a standard Gigabit connection.
However, two of the standard Ethernet ports are still on board in case you want to upgrade your network in the future. For external devices, there are three USB 3.0 ports.