# Network switch MikroTik CRS112-8P-4S-IN — 8x Gigabit PoE RJ-45, 4x SFP, DC 18–57V, 10 W, white

**URL:** https://aio.lv/en/product--mikrotik-crs112-8p-4s-in--506268
**Data updated:** 2026-01-21 10:49 (EET)
**Category:** Network Switches
**Manufacturer:** MikroTik
**Manufacturer code:** CRS112-8P-4S-IN
**Warranty:** 1 Year
**Availability:** Available for order
**Price:** 178.99 €
**Prices and availability valid until:** 2026-08-03 23:59
**Price without VAT (21%):** 147.93 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mikrotik-crs112-8p-4s-in--506268

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Wednesday | free |
| Pickup points | 13.07.2026 | 1.89 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

Managed network switch MikroTik CRS112-8P-4S-IN with 8 Gigabit RJ-45 ports supporting IEEE 802.3at/802.3af PoE and 4 SFP slots for fiber uplinks. Operates from 18–57 V DC with max power consumption 10 W; built-in processor (400 MHz), 128 MB RAM and 16 MB flash. Compact white unit suited for small office, branch or home networks; AC adapter included.

## Long description

CRS112-8P-4S-IN is an eight-port Gigabit RJ45 PoE switch with four SFP slots for fiber uplinks up to 1 Gbps. The unit includes a 28 V 3.4 A power adapter and provides multiple PoE power options including autosensing 802.3af/at (PoE/PoE+) and Passive PoE. A secondary DC jack on the rear accepts a 48–57 V supply (sold separately) to enable full 802.3af/at powering when that input is used.
Advantages
The switch combines eight Gigabit Ethernet sockets with four SFP ports for flexible copper and fiber connectivity. Built-in support for both 802.3af/at autosensing and Passive PoE allows compatibility with a wide range of powered devices. Included 28 V 3.4 A adapter enables immediate deployment, while the optional 48–57 V input increases available PoE current for 802.3af/at devices. Auto-detection of device power requirements simplifies installation.
Key specifications
Ports: 8 × Gigabit RJ45 PoE ports + 4 × SFP slots
PoE standards: autosensing 802.3af/at (PoE/PoE+) and Passive PoE
Included power supply: 28 V 3.4 A adapter
Secondary power input: DC jack for 48–57 V (not included)
Maximum per-port current: 1 A per port at 18–28 V input; 450 mA per port at 48–57 V input
Total PoE current limit: 2.8 A at 24 V; 1.4 A at 48–57 V
PoE wiring: mode B (pins 4,5 = + and 7,8 = -)
Uplink speed (SFP): up to 1 Gbps
How to use
Connect network devices to the RJ45 ports and fiber uplinks to the SFP slots as required. Use the included 28 V 3.4 A adapter for standard operation; if you need to power 802.3af/at devices at higher per-port power draw, connect a compatible 48–57 V DC supply to the secondary jack. The switch will automatically detect attached devices and deliver the appropriate PoE type. Observe the total PoE current limits to avoid overloading the power source.
Recommendations
For deployments with multiple high-power 802.3af/at devices, use an appropriate 48–57 V DC power supply to ensure sufficient per-port power while keeping total current within the specified limits. Verify device PoE requirements and confirm SFP module compatibility with 1 Gbps uplinks.

## Specifications

### Packaging data

| Feature | Value |
|---|---|
| AC adapter included | Yes |

### Logistics data

| Feature | Value |
|---|---|
| Harmonized System (HS) code | 85176990 |

### Operational conditions

| Feature | Value |
|---|---|
| Operating temperature (T-T) | -20 - 60 |

### Power

| Feature | Value |
|---|---|
| DC input voltage | 18 - 57 |
| Power consumption (max) | 10 W |

### Performance

| Feature | Value |
|---|---|
| Processor frequency | 400 MHz |
| Internal memory | 128 MB |
| Flash memory | 16 MB |
| Compatible operating systems | RouterOS L5 |
| Built-in processor | Yes |

### Ports & interfaces

| Feature | Value |
|---|---|
| Basic switching RJ-45 Ethernet ports type | Gigabit Ethernet (10/100/1000) |
| Basic switching RJ-45 Ethernet ports quantity | 8 |
| SFP module slots quantity | 4 |
| Power connector | DC-in jack |

### Power over Ethernet (PoE)

| Feature | Value |
|---|---|
| Power over Ethernet (PoE) | Yes |

### Network

| Feature | Value |
|---|---|
| Networking standards | IEEE 802.3at, IEEE 802.3af |
| 10G support | No |

### Design

| Feature | Value |
|---|---|
| Product colour | White |

## FAQ

### How much does the MikroTik CRS112-8P-4S-IN network switch cost, and is it available for purchase?

The price is 178.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 131 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on Wednesday at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can MikroTik CRS112-8P-4S-IN network switch be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All MikroTik products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized MikroTik service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: basic switching rj-45 ethernet ports type, basic switching rj-45 ethernet ports quantity, 10g support, product colour, networking standards, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for MikroTik CRS112-8P-4S-IN network switch?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/506268/60937739_large.webp