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Compact metal desktop switch with eight SFP+ ports and one Ethernet port

Mikrotik

Mikrotik CRS309-1G-8S+IN 9-port network switch

SKU CH-B03B-31RQD

A compact 9-port switch with eight 10G SFP+ ports and one Gigabit Ethernet port, offering 162Gbps switching capacity and silent passive cooling

  • Compact desktop switch fits tight spaces with 141mm x 115mm x 28mm metal enclosure
  • Silent passive cooling uses the metal case as a heatsink with no fan noise
  • Eight SFP+ ports deliver 10Gbps each for 162Gbps total switching capacity
  • Dual-core 800MHz CPU and 512MB RAM run RouterOS or SwOS via dual boot
  • Single Gigabit Ethernet management port accepts 12V passive PoE or 802.3af power

Compact 10G aggregation switch

The Mikrotik CRS309-1G-8S+IN is a passively cooled Cloud Router Switch with eight SFP+ ports supporting 10Gbit modules and one Gigabit Ethernet management port. It delivers 162Gbps total switching capacity and 81Gbps non-blocking throughput in a fanless metal enclosure.

Suits fibre-heavy links, not copper-only desks

This unit fits builders who need dense 10G fibre uplinks in a silent desktop or rack form factor. Buyers who want multiple copper ports for direct device connections or PoE output to power cameras and access points should look at a different model.

Eight SFP+ slots define the build

The eight SFP+ interfaces set the port budget; every 10G link consumes one slot, so the switch only works when the surrounding network uses fibre or compatible DAC cables.

How it compares

Measured against everything we stock in Ethernet & PoE Switches, at today’s prices. Recalculated every night.

Price $298.99
Cheaper than about 59% of the 2,759 comparable items (median $482.99).

Specifications

No published specifications for this item yet.

Questions about this item

How much power does the CRS309-1G-8S+IN draw when all eight SFP+ ports run at 10Gbps continuously?

The switch is powered by 12 Volts passive PoE or 802.3 af and uses passive cooling; no fan noise or dust buildup occurs during all-day operation.

Which transceivers and cables must I supply to use the eight 10G SFP+ ports?

You must provide compatible SFP+ modules and matching fibre or direct-attach cables; the switch has no built-in optics.

Will the single 10/100/1000 Ethernet management port negotiate down to 100Mbps if I connect it to an older router?

Yes, the management port supports 10, 100 and 1000Mbps speeds and will auto-negotiate with legacy equipment.

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