# PoE injector MikroTik GPEN21 with SFP support, Gigabit Ethernet (10/100/1000 Mbps), 2 RJ-45 ports, white, 12–57V input

**URL:** https://aio.lv/en/product--mikrotik-gpen21--3520236
**Data updated:** 2026-01-13 11:22 (EET)
**Category:** PoE Adapters
**Manufacturer:** MikroTik
**Manufacturer code:** GPEN21
**Warranty:** 1 Year
**Availability:** Available for order
**Price:** 26.49 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 21.89 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mikrotik-gpen21--3520236

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 26.06.2026 | free |
| Pickup points | 01.07.2026 | 1.99 EUR |
| Courier delivery to door | 01.07.2026 | 4.99 EUR |

## Summary description

The MikroTik GPEN21 is a PoE injector featuring SFP support and Gigabit Ethernet connectivity at 10/100/1000 Mbps. It provides two RJ-45 ports and accepts an AC adapter input voltage between 12 and 57 V. Packaged as a single unit in white, the GPEN21 powers devices over Ethernet and is suitable for extending power and network to SFP-enabled switches, access points and other network equipment.

## Long description

The MikroTik GPEN21 is a PoE injector with SFP support that provides Gigabit Ethernet connectivity at 10/100/1000 Mbit/s. Designed to power compatible network devices over Ethernet, the unit comes in white and is supplied as a single device per package. It accepts a wide AC adapter input voltage range and is intended for integration into wired network setups where remote powering is required.
Advantages
The GPEN21 offers both Gigabit Ethernet performance and SFP compatibility in a compact housing. It supports a broad input voltage range and can deliver up to 30 watts of power to connected devices, enabling flexible deployment in various network environments. Its small form factor simplifies placement within racks or near network endpoints.
Suitable for
 Powering PoE-enabled access points and IP cameras
 Supplying power to network switches or devices with SFP uplinks
 Small office or home network segments requiring remote power over Ethernet
Key specifications
 Power input range: 12–57 V (AC adapter)
 Power consumption: 30 W
 Data rates: 10/100/1000 Mbit/s (Gigabit Ethernet)
 Ports: 2 Ethernet (RJ-45) ports and SFP support
 Operating temperature: -20 °C to 70 °C
 Dimensions: 92 × 104 × 24 mm
 Colour: White
How to use
Connect the AC adapter within the specified 12–57 V range to the injector, then connect the upstream network source and the powered device to the appropriate Ethernet/SFP ports. Ensure the connected device supports PoE and that the injector power budget meets the device requirements. Verify link status after connections and place the injector in a location with adequate ventilation within the specified operating temperature range.
Usage recommendations
Use a compatible AC adapter rated for the required input voltage and sufficient power output. Keep the unit away from direct heat sources and moisture, and confirm PoE polarity and power class compatibility when connecting sensitive equipment.

## Specifications

### Ports & interfaces

| Feature | Value |
|---|---|
| Ethernet LAN (RJ-45) ports | 2 |
| DC-in jack | Yes |

### Packaging content

| Feature | Value |
|---|---|
| Number of products included | 1 pc(s) |

### Network

| Feature | Value |
|---|---|
| Power over Ethernet (PoE) | Yes |
| Ethernet LAN data rates | 10, 100, 1000 |
| Ethernet interface type | Gigabit Ethernet |

### Power

| Feature | Value |
|---|---|
| AC adapter input voltage | 12-57 |

### Logistics data

| Feature | Value |
|---|---|
| Harmonized System (HS) code | 85044090 |

### Features

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

## FAQ

### How much does the PoE injector MikroTik GPEN21 cost, and is it available for purchase?

The price is 26.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 68 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 26.06.2026 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. All transactions are 100% secure and encrypted.

### 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: ethernet lan (rj-45) ports, product colour, 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.

## Image

https://aio.lv/img/cache/product/3520236/54635788_large.webp