MikroTik CRS305-1G-4S+IN Switch

MikroTik CRS305-1G-4S+IN is a compact, fanless 5‑port switch with 1× Gigabit + 4× 10G SFP+, dual DC power, RouterOS/SwOS dual‑boot, ~41 Gbps throughput—ideal for home labs and small offices.

Here are the detailed specifications for the MikroTik CRS305-1G-4S+IN:

🧠 Hardware

• CPU: 98DX3236A1, 800 MHz, 1 core (ARM 32-bit)
• RAM: 512 MB
• Storage: 16 MB flash
• Switch Chip: Marvell DX family

🌐 Ports

• 1 × Gigabit Ethernet port (supports PoE-in: 802.3af/at and passive)
• 4 × 10G SFP+ cages (compatible with 1.25G and 10G SFP/SFP+ modules)

⚡ Power & Cooling

• Power Inputs:
  • 1 × Passive PoE-in on Ethernet port (12–57 V)
  • 2 × DC jacks (redundant)
• Max Power Consumption: ~18 W
• Cooling: Fanless (passive cooling)

⚙️ Software

• Operating Systems: Dual boot – SwOS and RouterOS (Level 5 license)
• Features (varies by OS):
  • VLAN, ACLs, Layer 2 switching, monitoring tools
  • Limited Layer 3 routing (RouterOS mode)

📊 Performance

• Switching Capacity: 82 Gbps
• Non-blocking Throughput: 41 Gbps
• Forwarding Rate: ~61 Mpps (64-byte packets)

🛠 Physical & Environmental

• Dimensions: 141 × 115 × 28 mm (desktop size)
• Operating Temperature: –40 °C to +70 °C
• MTBF: ~200,000 hours at 25 °C

📦 Included

• Power adapter
• Desktop case
• Mounting screws

Datasheet