The MikroTik CRS328-4C-20S-4S+RM is a fiber-first Cloud Router Switch designed for aggregation and distribution layers in ISP, enterprise, and lab networks. With high SFP port density and 10G SFP+ uplinks, it provides a scalable solution for consolidating fiber connections while maintaining flexible management through RouterOS or SwOS.

Where the CRS328-4C-20S-4S+RM is commonly used

• Fiber aggregation in ISP and enterprise networks
• Distribution switching between access and core layers
• High-density SFP environments transitioning to 10G uplinks
• Network labs and test environments requiring flexible port selection

The switch features twenty SFP ports for Gigabit fiber connections, four 10G SFP+ ports for high-speed uplinks, and four combo ports that support either SFP or RJ45 connections. Combo ports are software-selectable, allowing administrators to choose which interfaces are active based on deployment requirements.

Housed in a 1U rack-mountable enclosure, the CRS328 includes dual 100–240 V power supplies with failover support to ensure continuous operation. An RJ45 console port and configurable mode button provide additional management and troubleshooting options.

The CRS328 supports dual-boot operation, allowing administrators to choose between RouterOS or SwOS. SwOS offers a simplified interface focused on switching tasks, while RouterOS enables advanced routing, VLANs, and Layer 3 functionality when required.

• 20 × SFP ports for fiber access
• 4 × 10G SFP+ uplink ports
• 4 × combo SFP/RJ45 ports (software selectable)
• Dual redundant power supplies
• RouterOS or SwOS dual-boot support
• RJ45 console port and configurable mode button
• 1U rack-mountable design