The MikroTik CRS112-8G-4S-IN is an affordable, fully functional Layer 3 desktop switch engineered for small and medium enterprise environments requiring flexible Gigabit Ethernet routing and long-range fiber backhaul connections. Equipped with eight 10/100/1000 Mbps RJ45 Ethernet ports alongside four 1.25G SFP optical cages, the switch allows seamless integration between traditional copper networks and high-speed fiber lines.
Driven by a 400 MHz Qualcomm QCA8511 processor and 128 MB RAM, the CRS112-8G-4S-IN is housed in a durable metallic desktop enclosure that operates silently thanks to its efficient passive cooling design. Powered by MikroTik RouterOS (Level 5 license), it provides administrators with complete control over VLAN tagging, port mirroring, broadcast storm control, access control lists (ACLs), and basic dynamic routing.
Comprehensive Key Features
8x Gigabit RJ45 Ports & 4x 1.25G SFP Cages: Provides 8 Gigabit Ethernet copper ports combined with 4 dedicated SFP slots for extended fiber uplinks and inter-switch trunking.
Full-Featured RouterOS L5 License: Pre-installed with RouterOS Level 5, unlocking advanced Layer 2 switching features alongside Layer 3 routing capability, firewall policies, and VPN management.
Silent Passive Cooling: Solid metallic chassis functions as a heatsink, providing completely fanless and noise-free operation.
Flexible Mounting Design: Compact desktop form factor equipped with removable rackmount ears for standard 19-inch equipment cabinet installation.
Serial Console Management: Includes a dedicated RJ45 serial port for direct out-of-band management and debugging.
Energy-Efficient Powering: Low power consumption operating on a wide DC input voltage range (10 – 28 V DC).
Extended Technical Specifications
1. Hardware & Physical Parameters
Model / SKU: CRS112-8G-4S-IN
Dimensions: 0.200 m × 0.143 m × 0.044 m (200 × 143 × 44 mm)
Weight: 0.920 kg
CPU: QCA8511 Single-Core @ 400 MHz
RAM: 128 MB
Storage: 16 MB Flash
Enclosure Material: Desktop / Rackmount Heavy-Duty Steel Casing
Status LEDs: Power, User LED, Port Link/Activity Status Indicators
2. Wireless, Networking & Performance Parameters
Ethernet Ports: 8× 10/100/1000 Mbps RJ45 Ports
SFP Cages: 4× 1.25 Gbps SFP Slots
Console Port: 1× RJ45 Serial Console Port
Switching Capacity: 24 Gbps
Non-Blocking Throughput: 12 Gbps
Forwarding Rate: 17.8 Mpps
Operating System: MikroTik RouterOS (License Level 5)
3. Electrical & Environmental Parameters
Power Method: DC Power Jack (10 – 28 V DC) or Passive PoE-in on Port 1 (10 – 28 V DC)
Included Power Supply: 24 V DC / 0.8 A Power Adapter
Max Power Consumption: 10.5 W
Cooling Type: Passive / Fanless
Operating Temperature: -40°C to 70°C (-40°F to 158°F)