The smart Power Supply for your Network
Have you found the perfect spot for your new IP camera, but there's no power outlet anywhere nearby? Your old switch still works perfectly but doesn't have a PoE function? The Extralink 4-Port Gigabit PoE Injector is the clever and cost-effective solution. Instead of replacing your entire setup, you simply upgrade it. Connect the injector between your switch and up to four end devices and reliably supply them with power and data – via a single Network cable. Ideal for easily and quickly expanding an existing Network.
Full power with PoE+ and Gigabit speed
Modern devices demand more power. This injector delivers it. With support for the 802.3at PoE+ standards, it provides up to 30.8 watts per port. This is more than enough to operate demanding PTZ cameras, powerful WiFi Access Points, or complex VoIP phones. At the same time, the Gigabit capability of all ports ensures that your data flows at up to 1000 Mbps. This way, you can be sure that your Power Supply won't become a bottleneck for your high-speed network.
Safety first: Active PoE for your devices
Trust is good, control is better. Unlike cheap passive adapters, this injector uses active PoE. This means it communicates with the connected device before supplying power to determine its exact energy requirements. Power is only released if a compliant PoE device is detected. So, if you accidentally connect your laptop or another non-PoE client, absolutely nothing happens. Your valuable hardware is 100% safe.
Easy installation, robust operation
No software, no configuration, no headaches. The Extralink Injector works on the Plug & Play principle. Simply connect and get started. The robust metal housing not only ensures good heat dissipation but also durability in daily use. Thanks to the provisions for wall mounting, it can be installed cleanly and space-savingly. As a central element, it belongs to the category of PoE Injectors / Power Supplies and is the perfect addition for your IP Cameras. Please note that a separate 44-57V DC Power Supply is required for operation.
Strengths & Notes at a Glance
- Pro: Enables cost-effective PoE retrofitting for up to four devices.
- Pro: Supports the powerful 802.3at PoE+ standard for demanding end devices.
- Pro: Active PoE negotiation reliably protects non-PoE devices from damage.
- Pro: Full Gigabit speed on all ports without performance loss.
- Pro: Compact, fanless metal housing with wall mounting option.
- Note: A 44-57V DC power supply, which is absolutely necessary for operation, is not included in the scope of delivery.
- Note: The failure of one power supply leads to the failure of all four connected devices.
Specifications & Features
| Manufacturer: | Extralink |
| Model: | ACTIVE PoE Injector 4 PORT GIGABIT |
| Product Code: | EX.12554 |
| EAN: | 5903148912554 |
| Device Type: | PoE Injector (Midspan) |
| Total Ports: | 8x RJ-45 |
| LAN Ports (Data-In): | 4x RJ-45 10/100/1000 Mbps |
| PoE Ports (Data + Power-Out): | 4x RJ-45 10/100/1000 Mbps |
| PoE Standards: | IEEE 802.3af (PoE), IEEE 802.3at (PoE+) |
| PoE Type: | Active (with negotiation) |
| PoE Mode: | Mode A (Endspan-Pinout) |
| Power Pinout: | Pins 1/2 (-), Pins 3/6 (+) |
| Power per Port (max.): | Up to 30.8 W (802.3at) / 15.4 W (802.3af) |
| Total Power Budget: | Up to 120 W (depending on power supply) |
| Supported PoE Classes: | Class 0, 1, 2, 3, 4 |
| Current Limit: | 550 mA per port |
| Power Supply (Input): | 44 - 57 V DC |
| Power Connector: | Barrel Jack (DC Jack), 5.5 mm |
| Power Supply: | Not included |
| Recommended Power Supply Output: | Minimum 40 W |
| Housing: | Metal |
| Mounting: | Wall mounting possible |
| Dimensions: | approx. 11.6 x 4.4 x 2.3 cm |
| Weight: | approx. 120 g |
| Operating Temperature: | -10°C to 60°C |
| Certificates: | CE, FCC Part 15 Class B |
| Management: | Unmanaged, Plug & Play |
Scope of Delivery
| 1 x Extralink 4-Port Gigabit PoE Injector (EX.12554) |
Frequently Asked Questions (FAQ)
Do I need to use a specific power supply for this PoE injector?
Yes, you need a separate DC power supply with an output voltage between 44 and 57 volts. The power supply's wattage should match the combined power consumption of your end devices; at least 40 watts are recommended for full operation.
What does 'Mode A' mean and is it important for my devices?
'Mode A' means that power is sent over the same wire pairs (1/2 and 3/6) as the data. For you as a user, this is generally not critical, as all standard-compliant PoE end devices (PDs) must support both Mode A and Mode B to ensure compatibility.
Can I also connect devices that do not require PoE?
Yes. Since this is an active PoE injector, the port will only supply power if an 802.3af/at-compliant device is connected and detected. A non-PoE device like a computer will function normally on the PoE port but will not receive power and will not be damaged.
How many devices can I operate at full power simultaneously?
You can power up to four devices simultaneously using the PoE+ standard (802.3at), as long as the total budget of your external power supply is not exceeded. For example, with a 120-watt power supply, you could power four devices with almost 30 watts each.
Does the injector reduce my network speed?
No, the injector is designed for Gigabit speeds (1000 Mbps) and passes data transparently. It should not affect your Network performance, as long as all components (Cabling, Ethernet Switch, end device) are also Gigabit-capable.
What is the difference between this injector and a PoE switch?
A PoE Injector adds power to an existing Network and is ideal for retrofitting a few devices. A PoE Switch is a Network Switch with integrated PoE functionality on each port. A Switch is often the better solution for new installations with many PoE devices, while an Injector is a flexible and affordable retrofit option.
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