MikroTik CRS309‑1G‑8S +IN 8-port 10G SFP+ Switch

The MikroTik CRS309‑1G‑8S+IN 8-port 10G SFP+ switch is a compact, high-performance switch designed for environments requiring fast, reliable 10G networking. It features eight 10G SFP+ ports and a single Gigabit Ethernet port with PoE-in support, making it ideal for fiber-heavy setups while offering simple power options. Powered by a dual-core 800 MHz CPU and 512 MB of RAM, the CRS309 delivers up to 162 Gbps switching capacity with fanless, passive cooling in a durable metal chassis. It supports dual-boot capability with both SwOS and RouterOS (License Level 5), offering flexibility for users who need either a simplified switch OS or a powerful routing platform. Its low power consumption, silent operation, and rackmount compatibility make it perfect for use in office networks, labs, or data centers where space and cooling are limited.

Here are the detailed specifications for the MikroTik CRS309‑1G‑8S+IN 8-port 10G SFP+ switch,

🧠 Hardware

• Product Code: CRS309‑1G‑8S+IN
• CPU: Dual-core Marvell 98DX8208 @ 800 MHz (ARM architecture)
• RAM: 512 MB
• Storage: 16 MB flash
• MTBF: ~200,000 hours @ 25 °C; Ambient temp –40 °C to +70 °C

🔌 Ports & Connectivity

• 1 × Gigabit RJ45: PoE-in capable (802.3af/at or passive)
• 8 × 10G SFP+ cages: Supports 1.25 Gb or 10 Gb SFP/SFP+ modules
• Power Inputs:
  • DC jack (12–57 V)
  • PoE-in via the Ethernet port (18–57 V)
• Serial console: RS‑232; also includes grounding terminal

⚡ Power & Thermal

• Max Power Consumption: ~23 W (17 W idle)
• Cooling: Fully passive metal chassis (heatsink), fanless

⚙️ Software & Performance

• Operating Systems: Dual-boot SwOS or RouterOS v7; License Level 5
• Switching Capacity: 162 Gbps aggregate; non-blocking throughput of 81 Gbps

📦 Physical & Accessories

• Dimensions: 272 × 191 × 44 mm (1U rackmount option via included ears)
• Certifications: CE, EAC, RoHS; IP20 indoor-rated
• Included in box: 24 V 1.2 A power adapter, rack ears, K-37 mounting set

The MikroTik CRS309‑1G‑8S+IN 8-port 10G SFP+ switch is a very compact, yet powerful networking switch. It has eight SFP+ slots, supporting up to 10 Gbit module in each, which results in a total switching capacity of 162 Gbps and total non-blocking throughput of 81 Gbps.

The device also has dual-core 800 MHz CPU, 512 MB RAM, a management Ethernet port with PoE power input, RS232 serial port, a grounding terminal and is capable of dual boot (choose which operating system you prefer, RouterOS, or SwOS).

Datasheet