Overview Summary
The MikroTik CRS328-4C-20S-4S+RM is a rugged rackmount cloud router switch with 20 SFP and 4 SFP+ ports plus 4 combo Ethernet/SFP ports, delivering robust 64 Gbps throughput and 128 Gbps switching capacity for demanding network environments. Built with dual-boot support for RouterOS or SwOS and an 800 MHz CPU with 512 MB RAM, this managed switch is ideal for growing businesses and ISPs in South Africa looking to upgrade core or aggregation layers of their network - buy now to enhance your fibre connectivity. With support for VLANs, link aggregation, STP/RSTP/MSTP and advanced security controls, you can shop now for flexible deployment and network segmentation. MikroTik+1
Designed for rackmount installations, the CRS328-4C-20S-4S+RM brings enterprise-grade performance and reliability to your network infrastructure. Whether you need to expand your data centre links or backbone connections, this switch handles heavy traffic with ease and delivers stable, efficient switching - buy today to future-proof your setup. MikroTik
Performance tier: Enterprise-grade
Uses: fibre backbone networking, ISP aggregation, data centre switching, enterprise LAN infrastructure, high-speed SFP/SFP+ connectivity Overview
Product Summary
The CRS328-4C-20S-4S+RM is a 28 independent port switch with a combo group. This device has twenty SFP ports, four SFP+ ports for 10G modules and four combo ports, where you can choose to use SFP or RJ45 ports from the combo group. These ports can also be software selected, so if you have plugged in all eight cables, you can use scripting, to decide which four combo ports will be active.
The device comes in a 1U rackmount case with two 100-240 V power supplies with failover functionality. A RJ45 console port is available for management and debugging, and a mode button can be customised to execute any RouterOS commands.
The device has a "Dual boot" feature that allows you to choose between two operating systems - RouterOS or SwOS.
Description
The MikroTik CRS328-4C-20S-4S+RM delivers high-density fiber connectivity with flexible port selection, strong switching performance, and dual operating system support. It is designed for businesses and service providers that need scalable Layer 2 switching, advanced traffic control, and reliable rack-mounted deployment.
Features
Ports and Connectivity Options
This cloud router switch is built for environments that rely heavily on fiber networking and high-speed uplinks.
- Twenty dedicated SFP ports for fiber modules
- Four SFP+ ports supporting 10G connections
- Four combo ports selectable between SFP and RJ45
- Software-controlled combo port activation
- RJ45 console port for direct management access
Switching Power and Throughput
Engineered for demanding network loads, this MikroTik switch ensures consistent performance across all active ports.
- Non-blocking Layer 2 switching architecture
- Switching capacity up to 128 Gbps
- Throughput rated at 64 Gbps
- Jumbo frame support up to 10218 bytes
- 16K host table for large network environments
Traffic Control and Network Stability
Advanced switching functions help maintain performance, security, and visibility across complex networks.
- IEEE 802.1Q VLAN support
- Up to 4000 simultaneous VLANs
- Port isolation and port security
- Broadcast storm control
- Ingress and egress port mirroring
- STP, RSTP, and MSTP compatibility
- IGMP snooping for multicast efficiency
Aggregation and Monitoring Capabilities
Designed for scalable network growth, the CRS328-4C-20S-4S+RM supports aggregation and monitoring tools commonly used in enterprise setups.
- IEEE 802.3ad link aggregation
- Static link aggregation support
- Access Control Lists for traffic filtering
- SNMP for network monitoring
- MikroTik neighbor discovery protocol
System Resources and Operating Modes
Powered by efficient hardware and flexible software, this switch adapts to different operational needs.
- 800 MHz CPU for control plane tasks
- 512 MB RAM for stable operation
- Dual boot support with RouterOS or SwOS
- RouterOS Level 5 license
- Customizable mode button for automation
Rack-Mount Ready Design
Built for professional installations, the 1U rackmount chassis fits seamlessly into standard network racks.
- Compact 1U form factor
- Dual power inputs with failover support
- Optimized airflow for continuous operation
The MikroTik CRS328-4C-20S-4S+RM is an ideal choice for organizations seeking a powerful fiber switch with flexible port configuration, strong Layer 2 capabilities, and enterprise-grade control.
Specifications
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Specifications |
| Product Code | CRS328-4C-20S+R |
| Specifications |
| Product code | CRS328-4C-20S-4S+RM |
| Architecture | ARM 32bit |
| CPU | 98DX3236 |
| CPU core count | 1 |
| CPU nominal frequency | 800 MHz |
| Dimensions | 443 x 200 x 44 mm |
| License level | 5 |
| Operating System | RouterOS / SwitchOS |
| Size of RAM | 512 MB |
| Storage size | 16 MB |
| Storage type | FLASH |
| Tested ambient temperature | -20 + 60 degrees C |
| Powering |
| Max Power consumption | 43W |
| Number of AC inputs | 2 |
| AC input range | 100-240 |
| Ethernet |
| Ethernet Combo ports | 4 |
| Fiber |
| SFP ports | 20 |
| SFP+ ports | 4 |
| Peripherals |
| Serial port | RJ45 |
| Other |
| PCB temperature monitor | Yes |
| Voltage Monitor | Yes |
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