The MikroTik CRS520‑4XS‑16XQ‑RM Layer 3 Switch is a high-performance, enterprise-grade Layer 3 switch tailored for data centers, high-performance networks, and ISP cores. Featuring 16× 100G QSFP28, 4× 25G SFP28, and 2× 10G RJ45 ports, it is designed to provide maximum throughput, flexible interface options, and hardware-based routing offload. With a powerful quad-core 2 GHz ARM CPU, 4 GB RAM, and dual redundant hot-swappable PSUs, it ensures reliable uptime in demanding environments. General Model: CRS520-4XS-16XQ-RM Series: Cloud Router Switch (CRS) Form Factor: 1U Rackmount Operating System: RouterOS v7 (License Level 5) Use Case: Enterprise backbone, ISP core, data center switching, high-throughput routing Hardware CPU: ARM 64-bit AL52400, quad-core at 2 GHz RAM: 4 GB DDR4 Storage: 128 MB NAND Switch Chipset: Marvell 98CX8410 Cooling: 4× hot-swappable intelligent fans Ports 16 × 100G QSFP28 4 × 25G SFP28 2 × 10G RJ45 (10M/100M/1G/2.5G/5G/10G) 1 × RJ45 Serial Console Port Performance Switching Capacity: 200 Gbps Forwarding Rate: 138 Mpps (64-byte packets) Hardware Offloading: Yes (Layer 3 routing acceleration, ACLs, jumbo frames) Advanced Routing Protocols: OSPF, BGP, MPLS (via RouterOS) Power & Environmental Power Inputs: Dual AC (hot-swappable, 100–240V AC) Redundancy: Yes, with 2 hot-swappable power supply units Max Power Consumption: ~150 W (220 W with both PSUs installed) Cooling: 4× Hot-swap fans with temperature control Operating Temperature: -20°C to 50°C Software Features RouterOS v7 Support: Layer 3 dynamic routing (OSPF, BGP, MPLS) VLAN, ACL, QoS, firewall VRRP, bonding, bridging, scripting SNMP, SSH, Web UI, NetFlow L3 Hardware Offload: Supported for routing acceleration Routing Table Capacity: Supports large-scale route sets Physical Specifications Dimensions: 443 × 200 × 44 mm (1U height) Weight: Approx. 3.6 kg Chassis: Industrial-grade metal design Mounting: Rackmount ears and rear support included Use Cases Core switch for 100G and 25G data center deployments ISP peering edge and routing platforms High-throughput backbone for cloud computing and storage Multimedia or content delivery infrastructure requiring low-latency transport Meta Description MikroTik CRS520‑4XS‑16XQ‑RM Layer 3 Switch is a 1U rackmount switch with 16× 100G QSFP28, 4× 25G SFP28, and 2× 10G RJ45 ports, powered by a quad-core 2 GHz CPU, 200 Gbps switching, dual hot-swappable PSUs, and full Layer 3 hardware offload—ideal for data centers and high-speed core networks. Datasheet
