Your Network, Your Rules: Maximum PoE Flexibility
Forget rigid PoE solutions! The MikroTik CRS112-8P-4S-IN is the true PoE chameleon for your Network. Its eight Gigabit RJ45 PoE+ Ports are equipped with an intelligent auto-sensing function that automatically detects which PoE standard your connected device requires. Whether you want to power a MikroTik SXT antenna with 24V or an 802.3af IP camera, this PoE Gigabit Switch reliably and correctly supplies power to them – all on a single device. The special feature: Thanks to the dual power supply (18-28V and 48-57V DC input), you can flexibly adjust the PoE budget and supported standards. This way, you can power 24V passive devices and 48V 802.3af/at devices simultaneously if you purchase the corresponding 48-57V power supply separately. This is flexibility that competitors often overlook!
High-Speed Connectivity with Fiber Optics
Data transmission bottlenecks are a thing of the past. The MikroTik CRS112-8P-4S-IN offers you four SFP Uplink Ports that enable lightning-fast Fiber Optic Connectivity. Achieve uplinks of up to 1 Gbit/s and effortlessly connect the switch to your backbone Network, core switches, or bridge longer distances where copper cables reach their limits. Ideal for connecting high-resolution cameras or expanding your Network in larger environments.
Full Control with RouterOS Level 5
As a Managed Layer 2/3 Switch with a RouterOS Level 5 license, the MikroTik Smart Switch gives you full control over your network. Configure detailed VLANs, use port isolation, set ACLs, or monitor traffic – all via an intuitive interface. The special thing about RouterOS: You can remove ports from the switch configuration and use them for routing purposes. This fine-grained control goes far beyond the capabilities of many pure Layer 2 switches and makes the CRS112-8P-4S-IN a real power tool for your Network Switch for SMBs. Discover the variety of MikroTik Switches and optimize your infrastructure.
Silent and Robust: Your Fanless Companion
Are you looking for a switch that is not only powerful but also discreet? The MikroTik CRS112-8P-4S-IN is a fanless PoE Switch and operates absolutely silently. This makes it perfect for offices, hotels, or living areas where noise would be disruptive. But that's not all: It is designed for a wide temperature range from -20°C to 60°C. This means you can also use it in demanding environments such as control cabinets or warehouses, where other switches would have long since given up. A truly compact PoE Switch Desktop/Rackmount that delivers on its promises.
Strengths & Notes at a Glance
- Pro: Versatile PoE Support: The switch offers autosensing 802.3af/at PoE/PoE+ and passive PoE on all 8 Gigabit ports, enabling power supply to a wide range of devices such as IP Cameras, WiFi Access Points, and VoIP phones via a single cable.
- Pro: Flexible Connectivity with SFP Ports: Four SFP ports enable fiber optic uplinks of up to 1 Gbit/s, which is ideal for connecting to backbone networks, core switches, or for longer distances where copper cables reach their limits.
- Pro: RouterOS Functionality and Management: With RouterOS Level 5, the switch combines powerful Layer-2 switching functions with basic Layer-3 routing capabilities, firewalling, and advanced management options that allow detailed network configuration and monitoring.
- Note: Limited PoE Budget for 802.3af/at without separate power supply: Although a 28V 3.4A power supply is included, a separate 48-57V power supply is required for full 802.3af/at PoE/PoE+ functionality and a higher PoE budget (up to 160W). The included power supply mainly supports passive 24V PoE or a lower budget for 802.3af/at.
- Note: Limited Layer-3 Performance: Although the CRS112-8P-4S-IN offers Layer-3 functions via RouterOS, the CPU (QCA8511, 400 MHz) is not designed for demanding routing, firewalling, or NAT tasks at high speeds. For pure Layer-2 switching tasks, the performance is good, but when Layer-3 functions are activated, throughput performance can noticeably decrease.
Specifications & Features
| Manufacturer: | MikroTik |
| Model: | CRS112-8P-4S-IN |
| Product Type: | Cloud Router Switch |
| Architecture: | MIPSBE |
| CPU: | QCA8511 |
| CPU Core Count: | 1 |
| CPU Nominal Frequency: | 400 MHz |
| RAM: | 128 MB |
| Storage Size: | 16 MB |
| Storage Type: | FLASH |
| Ethernet Ports: | 8 x 10/100/1000 Mbit/s Gigabit RJ-45 |
| SFP Ports: | 4 x SFP |
| PoE Out: | Yes, Passive PoE (24V), 802.3af/at (48V) |
| Number of DC Inputs: | 2 (DC jack) |
| DC Input Voltage: | 12-57 V (Port 1), 48-57 V (Port 2 for 802.3af/at) |
| Max. Power Consumption (without PoE): | 10 W |
| Max. Power Consumption (with PoE): | 192 W (with 48V PSU), 102 W (with 28V PSU) |
| Operating System: | RouterOS Level 5 |
| Serial Port: | RJ45 |
| Operating Temperature: | -20°C to +60°C |
| Dimensions: | 200 x 142 x 44 mm |
| MTBF: | approx. 200,000 hours at 25°C |
Scope of Delivery
| 1 x MikroTik CRS112-8P-4S-IN PoE Switch |
| 1 x Power Supply 28V 3.4A |
| 1 x Quick Guide |
Frequently Asked Questions (FAQ)
What is the difference between PoE and PoE+ on this switch?
The MikroTik CRS112-8P-4S-IN supports both the 802.3af (PoE) and 802.3at (PoE+) standards, as well as passive PoE. PoE+ (802.3at) delivers more power per port (up to 30W) than PoE (802.3af, up to 15.4W), which is important for more power-intensive devices such as PTZ cameras or high-power WiFi Access Points. To power 802.3af/at devices at full capacity, a separate 48-57V PoE Injectors / Power Supplies is required.
Can I also configure VLANs with the MikroTik CRS112-8P-4S-IN?
Yes, the MikroTik CRS112-8P-4S-IN supports VLANs (IEEE 802.1Q VLANs) and can manage up to 4K simultaneous VLANs. Configuration is done via the dedicated switch menu in RouterOS. It is important to correctly configure VLANs under /interface Ethernet Switch to utilize hardware offload capabilities and maintain full performance.
Is the MikroTik CRS112-8P-4S-IN suitable for use in a server room?
Yes, due to its fanless design, the MikroTik Switches operates silently and is suitable for environments where noise could be an issue. It can be mounted both on the desktop and in a 19-Inch Racks (rackmount kit is included) and is designed for a wide temperature range from -20°C to 60°C, which also qualifies it for server rooms or electrical cabinets.
What type of fiber optic modules do I need for the SFP ports?
The four SFP / SFP\+ Modules of the CRS112-8P-4S-IN support 1-Gigabit SFP modules. They can be used for optical fiber connections to achieve uplinks of up to 1 Gbit/s. Standard SFP modules from various manufacturers that are compatible with MikroTik devices can be used.
Can the MikroTik CRS112-8P-4S-IN function as a full-fledged router? (Niche)
The CRS112-8P-4S-IN belongs to MikroTik's Cloud Router Switch (CRS) series, which combines router and switch functions. It runs RouterOS and can perform basic Layer 3 routing functions, firewalling, and NAT. However, the CPU (400 MHz) is not very powerful, so performance for intensive use of Layer 3 functions is limited compared to dedicated MikroTik Routers. It is primarily designed as a Layer 2 MikroTik Switches with advanced management and some routing capabilities.
Is there a way to control or monitor the PoE output per port? (Niche)
Yes, via RouterOS or SwitchOS mode, Managed Service Providers (MSPs) and administrators can enable or disable the PoE output per port. This allows for intelligent PoE management to restart connected devices or control power supply as needed.
Homepage: http://www.mikrotik.com/
