The MikroTik CRS310-1G-5S-4S+IN is a compact indoor 1U cloud router-switch built for fibre-centric networks. It offers 5 × 1 Gb SFP ports, 4 × 10 Gb SFP+ ports, and a 1 Gb RJ-45 port, all powered by a Marvell ARM v7 CPU (800 MHz) with 256 MB RAM