MikroTikThe
MikroTik CRS328-4C-20S-4S+RM Cloud Router Switch is a powerful 28‑port, dual‑boot cloud router switch tailored for high‑density fibre networks and rackmount environments. It offers
20 SFP ports,
4 10 G SFP+ uplinks, and
4 combo RJ45/SFP gigabit ports, all housed in a
1U chassis with redundant dual PSU.
With support for
RouterOS and SwOS,
Layer‑2 non‑blocking throughput of 64 Gbps, management features like
VLANs, ACL, STP, and
low power draw (43 W), it delivers reliable, flexible connectivity for data centres, ISP backbones, and enterprise networks
⚙️ Technical Specifications
| Category |
Details |
| Product Code |
CRS328-4C-20S-4S+RM |
| Architecture |
ARM 32-bit |
| CPU Model |
98DX3236A1-BTD4C000 |
| CPU Cores |
1 |
| CPU Frequency |
800 MHz |
| Switch Chip Model |
98DX3236 |
| Operating System |
Dual Boot: MikroTik RouterOS (License Level 5) & SwOS |
| RAM |
512 MB |
| Storage (Flash) |
16 MB |
🌐 CRS328-4C-20S-4S+RM Networking Interfaces
| Port Type |
Quantity |
Details |
| SFP Ports |
20 |
1G Fiber (SFP cages) |
| SFP+ Ports |
4 |
10G Fiber (SFP+ cages) |
| Combo Ports |
4 |
Shared SFP or RJ45 Gigabit Ethernet |
| Total Ports |
28 |
SFP+SFP+Combo |
Combo Ports Note: Each combo port has an SFP and an RJ45 interface. Only one can be active at a time.
🔌 Power & Cooling
| Feature |
Specification |
| Power Supply |
Dual redundant built-in 100–240V AC (hot-swappable) |
| Max Power Consumption |
43 W (fully loaded) |
| Cooling |
2 × temperature-controlled fans (active cooling) |
| PoE Out |
No |
📏 Physical & Environmental
| Feature |
Specification |
| Form Factor |
1U Rackmount |
| Dimensions (WxDxH) |
443 × 200 × 44 mm |
| Weight |
~2.1 kg |
| Operating Temperature |
-20°C to +60°C |
| Storage Temperature |
-40°C to +70°C |
| MTBF |
~200,000 hours at 25°C |
📡 Performance & Switching
| Feature |
Specification |
| Switching Capacity |
64 Gbps |
| Forwarding Rate |
95.2 Mpps |
| Packet Buffer |
2 MB |
| MAC Address Table Size |
16K entries |
| Jumbo Frame Support |
Up to 10218 bytes |
🔐 Software Features (RouterOS & SwOS)
- VLAN support (802.1Q, Q-in-Q, per-port VLAN)
- STP, RSTP, MSTP
- ACL (Access Control Lists)
- IGMP Snooping
- Static link aggregation (LACP)
- Port Isolation & Mirroring
- Broadcast Storm Control
- DHCP client & relay
- Web GUI, CLI, SNMP, and scripting support
🎯 Use Case Scenarios
- Enterprise Core Switch
- ISP Aggregation & Distribution
- Data Center Fiber Access
- Hybrid Fiber-Copper Deployment
📑 Certifications
Meta Description
MikroTik CRS328-4C-20S-4S+RM Cloud Router Switch, 28‑port rackmount, 20 SFP, 4×10G SFP+, 4 combo ports, dual PSU, RouterOS/SwOS—64 Gbps L2 switching, 43 W
Datasheet
