MikroTik CSS106-5G-1S — 5-Port Gigabit Smart Switch + 1 SFP Port

SKU: CSS106-5G-1S | Brand: MikroTik | Model: CSS106-5G-1S

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What Is the MikroTik CSS106-5G-1S? The Smart Switch That Thinks Ahead

If you’ve ever wrestled with sluggish networks, tangled traffic, or a router struggling to keep up with your expanding infrastructure, the MikroTik CSS106-5G-1S is the answer you’ve been waiting for. This compact yet powerful managed gigabit switch is purpose-built for home labs, small businesses, ISPs, and network professionals who refuse to compromise on performance — or price.

Equipped with five full Gigabit Ethernet ports and one SFP (Small Form-factor Pluggable) fiber port, the CSS106-5G-1S delivers wire-speed switching at up to 1 Gbps per port, allowing data to flow freely across your network without bottlenecks. Whether you’re managing VoIP systems, running NAS devices, linking multiple APs, or connecting an ISP uplink over fiber, this switch handles it all — silently, efficiently, and reliably.

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Key Features & Technical Specifications

Hardware Overview

• 5 x Gigabit Ethernet Ports (RJ45) — Full 1000 Mbps throughput on every port
• 1 x SFP Fiber Port — Compatible with 1G SFP modules for long-distance or fiber uplinks
• Switching Capacity: 12 Gbps non-blocking switch fabric
• Forwarding Rate: 8.9 Mpps (million packets per second)
• RAM: 64 MB DDR3
• Flash Storage: 16 MB
• CPU: 800 MHz QCA8337 switch chip
• Power Consumption: 5W max — extremely energy-efficient
• Power Input: Passive PoE (12–57V) or Micro-USB
• Operating Temperature: -40°C to +70°C
• Form Factor: Desktop / Wall-mountable
• Dimensions: 113 x 89 x 28 mm
• Weight: 176 g

Software — Powered by SwOS

• Web-based GUI management via SwOS (Switch Operating System)
• VLAN (802.1Q) support for traffic segmentation
• Port mirroring for monitoring and diagnostics
• STP / RSTP support for loop prevention
• Bandwidth limiting per port
• MAC address table with up to 2048 entries
• Port isolation for security-conscious deployments
• IGMP Snooping for efficient multicast traffic management

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Why Choose the MikroTik CSS106-5G-1S Over an Unmanaged Switch?

The Power of a Managed Switch — At an Unmanaged Price

Most budget switches give you plug-and-play simplicity but zero control. The CSS106-5G-1S flips that equation. For a fraction of what enterprise brands charge, you get deep Layer 2 management capabilities that let you take full ownership of your network architecture.

• Set up VLANs to segment your guest Wi-Fi from your corporate data — no more flat networks vulnerable to lateral attacks
• Prioritize critical traffic like VoIP and video conferencing to eliminate call drops and lag
• Monitor suspicious traffic with port mirroring to a dedicated analysis device
• Prevent broadcast storms with STP/RSTP — essential in any ring or redundant topology
• Limit bandwidth per port to stop a single device from hogging your entire uplink

This is not just a switch — it is a Layer 2 network management platform that grows with your infrastructure.

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Who Is the MikroTik CSS106-5G-1S Built For?

Network Professionals, Home Lab Enthusiasts & ISPs

The CSS106-5G-1S was designed with real-world deployments in mind. Here’s who benefits most:

• Home Lab Builders — Segment your hypervisor management, storage, and VM traffic across isolated VLANs without buying enterprise gear
• Small Businesses — Separate your staff, POS terminals, guest Wi-Fi, and IP cameras on the same switch infrastructure
• ISPs & WISPs — Use the SFP port for fiber backhaul and manage bandwidth caps per subscriber port with ease
• Network Engineers — A reliable Layer 2 test and lab device that supports real-world configurations
• Surveillance & Smart Building Installers — Isolate IP camera traffic via VLANs and IGMP snooping for clean multicast video streams
• Remote Sites & Branch Offices — Its ruggedized temperature rating (-40°C to +70°C) makes it perfect for outdoor enclosures and harsh environments

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The SFP Port — Your Gateway to Fiber Connectivity

Extend Your Network Beyond Copper Limits

Copper Ethernet has its limits — 100 metres to be exact. When your infrastructure demands more reach, or when you need to connect buildings across a campus, the CSS106-5G-1S’s dedicated SFP port opens the door to fiber optic connectivity.

• Supports 1G SFP modules — single-mode or multimode — for distances ranging from 550m to over 80km depending on the SFP module used
• Compatible with MikroTik S-85DLC05D, S-31DLC20D, and most third-party SFP transceivers
• Ideal for connecting to fiber-fed routers, OLTs, or upstream switches in a provider environment
• Eliminates electromagnetic interference (EMI) concerns common in industrial or high-RF environments

Whether you’re pulling fiber between floors in an office building or bridging two distant access points on a WISP tower, the SFP port is your high-speed, interference-free lifeline.

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SwOS: Simple, Powerful, and Designed for Real Networks

Browser-Based Management With Zero Software Installation

MikroTik’s Switch OS (SwOS) delivers a clean, intuitive web interface accessible from any modern browser — no proprietary software, no plugins, no licensing fees.

• VLAN management with a visual matrix view — assign trunk and access ports in minutes
• Per-port statistics — monitor traffic, errors, and link status in real time
• Host table — inspect all MAC addresses and the ports they’re learned on
• Firmware updates directly from the browser — no CLI required
• Factory reset via hardware button — safe recovery in any scenario
• Optional Winbox connectivity for power users comfortable with MikroTik’s full management ecosystem

SwOS makes the CSS106-5G-1S accessible to a junior technician on day one, while still offering the depth an experienced network engineer demands.

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Energy Efficiency That Protects Your Bottom Line

5 Watts. Six Ports. Full Gigabit Performance.

In an era where energy costs are rising and sustainability matters, the CSS106-5G-1S stands out with a miserly 5W maximum power draw. Running 24/7 for an entire year, this switch costs you less in electricity than a single cup of coffee per month.

• Passive PoE input (12–57V): Power it directly from a PoE router or injector — no need for a local power outlet
• Micro-USB power option: Power from a standard USB charger or power bank for temporary or lab deployments
• No fan required: Completely silent fanless operation — ideal for quiet offices, bedrooms, or home labs
• Zero compromise on performance — full wire-speed switching at minimal wattage

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Reliability You Can Count On — MikroTik’s Track Record

MikroTik has been engineering networking hardware since 1996, trusted by ISPs, enterprises, and network engineers in over 100 countries worldwide. The CSS106-5G-1S inherits that legacy of bulletproof reliability combined with Latvia-engineered precision.

• Industrial-grade temperature tolerance — operates reliably from freezing warehouses to sun-baked outdoor cabinets
• Proven QCA8337 silicon — a battle-tested switching chipset used in hundreds of thousands of deployments globally
• SwOS firmware actively maintained and updated by MikroTik’s engineering team
• Backed by MikroTik’s global support community — one of the most active networking forums on the internet

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Frequently Asked Questions

Does the CSS106-5G-1S support PoE output to power IP cameras or APs?

No — the CSS106-5G-1S does not provide PoE output. It accepts passive PoE input for its own power supply but does not pass through PoE power to downstream devices. For PoE output, consider the MikroTik CSS106-1G-4P-1S (PoE-out switch).

Is the CSS106-5G-1S compatible with RouterOS?

The CSS106-5G-1S runs SwOS, not RouterOS. However, it can be managed via Winbox (discovery only). It integrates seamlessly into a MikroTik RouterOS ecosystem as a downstream switch.

Can I use third-party SFP modules?

Yes. The SFP port is compatible with most standard 1G SFP transceivers from third-party vendors, including Cisco-compatible SFPs. Always verify the module’s voltage and DDM compatibility.

What is the maximum number of VLANs supported?

The CSS106-5G-1S supports up to 4,096 VLAN IDs (802.1Q) — more than sufficient for any small to mid-sized deployment.

Does it support Link Aggregation (LAG/LACP)?

No. The CSS106-5G-1S does not support LACP or port trunking/bonding. It is a Layer 2 switch focused on VLAN segmentation and basic QoS.

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In the Box — What’s Included

• 1 x MikroTik CSS106-5G-1S Gigabit Switch
• 1 x Power adapter (12V DC)
• 1 x Quick start guide

Note: SFP modules are sold separately.

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Final Verdict — Is the MikroTik CSS106-5G-1S Worth It?

Absolutely. For anyone who needs more than a dumb switch but doesn’t want to overpay for bloated enterprise features they’ll never use, the CSS106-5G-1S hits the sweet spot perfectly.

It’s compact, whisper-quiet, energy-sipping, and equipped with a feature set that rivals switches costing three times as much. The SFP port future-proofs your investment for fiber connectivity. SwOS makes management approachable. And MikroTik’s build quality ensures this switch will still be working years from now.

Stop overpaying for underperforming network gear. Upgrade to the MikroTik CSS106-5G-1S today — your network will thank you.

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