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Overview
Expand high-speed optical networking in compact setups with the MikroTik Cloud Router Switch CRS305-1G-4S+IN. Housed in a fanless, compact metallic enclosure, this desktop switch features four 10 Gbps SFP+ cages alongside a single Gigabit Ethernet copper port reserved for management or traffic forwarding. Featuring a "Dual Boot" operating system supporting both RouterOS and SwOS, multi-input power redundancy, and PoE-In functionality, it delivers exceptional 10GbE density and wire-speed switching throughput for small-office and lab deployments.
Key Features
- 10GbE SFP+ Optical Density: Features 4× 10 Gbps SFP+ cages supporting high-speed fiber transceivers and direct attach copper (DAC) cables (also compatible with 1.25 Gbps modules).
- Dedicated Gigabit Management Port: Equipped with 1× 10/100/1000 Mbps Ethernet port for quick Out-of-Band management access or regular routing.
- Dual Boot Operating System: Switch seamlessly between simplified SwitchOS (SwOS) for dedicated Layer 2 functions or full-featured RouterOS Level 5 for advanced Layer 3 routing and firewalls.
- Triple Power Redundancy: Powered via two redundant DC power jacks or via Passive/802.3af/at PoE-In on the Gigabit Ethernet port.
- Silent & Compact Metallic Enclosure: Fanless, passive cooling design ensures totally quiet operation suitable for noise-sensitive office environments.
- High Wire-Speed Performance: Delivers up to 41 Gbps non-blocking throughput and 82 Gbps switching capacity.
Specifications
| Attribute | Specification |
| Model | MikroTik Cloud Router Switch (CRS305-1G-4S+IN) |
| Architecture / CPU | ARM 32-bit / Marvell 98DX3236 (Dual Core @ 800 MHz) |
| Memory & Storage | 512 MB RAM, 16 MB Flash Storage |
| SFP+ Ports | 4× 10G SFP+ Cages (Supports 1.25G SFP and 10G SFP+) |
| Ethernet Ports | 1× Gigabit Ethernet (10/100/1000 Mbps) Port |
| Operating System | Dual Boot: RouterOS (License Level 5) / SwitchOS |
| Power Inputs | 3 Inputs: Dual DC Power Jacks (12–57V) + PoE-In (802.3af/at or Passive 12–57V) |
| Max Power Consumption | 10 W (without attachments) / 18 W (max load with copper modules) |
| Cooling Type | Passive (Fanless) |
| Included Accessories | 24V 0.8A Power Adapter |
| Dimensions | 141 × 115 × 28 mm |
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