MikroTik Cloud Router Switch 8 Port SFP+ with PoE Input | CRS309-1G-8S+IN

The MikroTik CRS309‑1G‑8S+IN is a powerful, compact 10 Gbps aggregation switch featuring eight SFP+ cages and a dedicated Gigabit Ethernet port with 802.3af/at PoE‑in support for flexible powering. Built around a dual‑core 800 MHz ARM CPU with 512 MB RAM and the Marvell 98DX8208 switch chip, it delivers a full 162 Gbps switching capacity and 81 Gbps non‑blocking throughput, enabling high‑performance fiber distribution in enterprise, ISP, and homelab environments. The passively cooled metal chassis doubles as a heat sink for silent operation, making it suitable for noise‑sensitive deployments while maintaining a wide operating range of –40 °C to +70 °C. Dual‑boot support allows administrators to choose between RouterOS for advanced Layer‑3 features or SwOS for streamlined switching management. With redundant power options (PoE‑in and DC jack), RS232 console access, and included rack‑ears, the CRS309‑1G‑8S+IN provides reliable, high‑density 10G switching in a compact, installation‑friendly form factor.