MikroTik CRS112-8P-4S-IN Cloud Router Switch with PoE
The MikroTik CRS112-8P-4S-IN is a powerful Gigabit ethernet switch with 8 PoE ports and 4 SFP ports for high-speed connectivity. It supports 802.3af/at PoE/PoE+ and Passive PoE, as well as up to 1 Gbps uplinks. The switch comes with a 28V 3.4 A power supply, and an additional DC jack can be used for 48-57 V power supply (sold separately). With 48-57 V DC input, the switch can power 802.3af/at devices, with a max current of 1 A per port. Total limit is 2.8A@24V and 1.4A@48-57V.
Tech Specs
Click here for the CRS112-8P-4S-IN datasheet.
| Device Specifications | |
|---|---|
| Specifications | |
| Product code | CRS112-8P-4S-IN |
| Architecture | MIPSBE |
| CPU | QCA8511 |
| CPU core count | 1 |
| CPU nominal frequency | 400 MHz |
| Switch chip model | QCA8511 |
| Dimensions | 200 x 142 x 44 mm |
| RouterOS license | 5 |
| Operating System | RouterOS |
| Size of RAM | 128 MB |
| Storage size | 16 MB |
| Storage type | FLASH |
| MTBF | Approximately 200'000 hours at 25C |
| Tested ambient temperature | -20°C to 60°C |
| Suggested price | $209.00 |
| Powering | |
| Number of DC inputs | 2 (DC jack) |
| DC jack input Voltage | 18-28 V / 48-57 V |
| Max power consumption | 160 W |
| Max power consumption without attachments | 10 W |
| Cooling type | Passive |
| PoE-out | |
| PoE-out ports | Ether1-Ether8 |
| PoE out | 802.3af/at |
| Low voltage PoE-Out current limit | 1 A |
| High voltage PoE-Out current limit | 450 mA |
| Max total out (A) | 2.8A (18V-28V) & 1.4A (48V-57V) |
| Ethernet | |
| 10/100/1000 Ethernet ports | 8 |
| Number of 1G Ethernet ports with PoE-out | 8 |
| Fiber | |
| SFP ports | 4 |
| Peripherals | |
| Serial console port | RJ45 |
| Other | |
| PCB temperature monitor | Yes |
| Certification & Approvals | |
| Certification | CE, EAC, ROHS |
| IP | IP20 |
FAQs
Q: What is the MikroTik CRS112‑8P‑4S‑IN used for?
A: It’s a Cloud Router Switch designed for access‑layer or edge networking where PoE is required. With 8 Gigabit PoE‑out ports and 4 SFP ports, it supports both powered devices (e.g. APs, cameras) and fiber uplinks.
Q: What PoE output and power modes does the CRS112‑8P‑4S‑IN support?
A: The switch supports auto‑sensing 802.3af/at PoE, plus passive PoE. It can output PoE on all 8 RJ45 ports, with current limits depending on input voltage (higher current at 18–28 V, lower at 48–57 V).
Q: What power inputs does this switch accept?
A: It has two DC power inputs: one for 18–28 V and another for 48–57 V. This lets you use either a standard 28 V supply (included) or a higher‑voltage PSU for better PoE performance.
Q: What are the switching performance and capacity specs?
A: It delivers ~12 Gbps of non‑blocking Layer‑2 throughput and ~24 Gbps switching capacity. The forwarding rate is around 17.8 million packets per second, making it efficient for heavy edge switching.
Q: What software features and management options are available?
A: It runs RouterOS (Licence Level 5), giving you full control over L2 and light L3 features. You can configure VLANs, ACLs, IGMP snooping, port isolation, link aggregation, and more via the RouterOS interface.