Cisco MA-INJ-4 PoE adapter Gigabit Ethernet
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Product Information
Full details
The Cisco MA-INJ-4 is a Gigabit Ethernet PoE adapter designed for users needing to simplify network installations by delivering both data and power over a single Ethernet cable. Its key benefit is reducing cabling complexity for devices like Meraki MV smart cameras. A potential consideration is its specific compatibility with IEEE 802.3at standards.
All features
| Model Part Number | MA-INJ-4 |
|---|---|
| Brand | Cisco |
Extended Product Information
FAQs
What is the maximum power output of this PoE injector?
The MA-INJ-4 is designed to comply with IEEE 802.3at standards, which typically allows for power delivery up to 30W per port.
Can this adapter be used with any PoE device?
It is designed for devices compliant with IEEE 802.3at (PoE Plus). While it may work with older 802.3af devices, it's best suited for devices requiring higher power. Always check the power requirements of your device.
What is the maximum length of the Ethernet cable I can use?
The maximum operating distance for reliable data and power transmission is 100 meters (328 feet) using Cat5e or higher quality Ethernet cable.
Does this injector require a separate power supply?
Yes, the MA-INJ-4 comes with an AC power adapter that must be plugged into a wall outlet to provide power to the connected device.
What is the difference between this injector and a PoE switch?
A PoE switch provides power and data to multiple devices from the switch itself. An injector is a standalone device used to add PoE capability to a non-PoE network port or to extend power over a single cable run to a specific device.
Can I mount this injector on a wall?
Yes, the adapter is designed to be wall-mountable, facilitating easier installation in various environments.
Troubleshooting
Device connected via injector is not receiving power.
Ensure the power adapter is securely connected to the injector and a working power outlet. Verify that the connected device is PoE-compatible and adheres to IEEE 802.3at standards. Check the Ethernet cable for damage and ensure it is fully seated in both ports.
No network connectivity to the device.
Confirm that the Ethernet cable connecting the injector to the network switch is functional and properly connected. Ensure the network switch is operational and providing network access. Test the Ethernet cable by connecting a known working device directly to the switch.
Device intermittently loses power or network connection.
Check for loose cable connections at the injector or the device. Ensure the operating environment is within the specified temperature range (0-40 °C). Inspect the Ethernet cable for any signs of wear or damage.
Pros and Cons
Pros
- Simplifies installation by consolidating data and power.
- Supports high-speed Gigabit Ethernet.
- Complies with the widely adopted IEEE 802.3at PoE standard.
- 100-meter maximum operating distance offers installation flexibility.
- Universal voltage input for global compatibility.
Cons
- Primarily designed for specific Meraki MV cameras; compatibility with other devices should be verified.
- Requires an existing Ethernet cable run.
- Single port output means it powers one device per injector.
Setup, Compatibility & Care
Setup:
- Connect a standard Ethernet cable from your network switch to the `RJ-45 input port` on the MA-INJ-4.
- Connect an Ethernet cable from the `RJ-45 output port` on the MA-INJ-4 to your PoE-compatible device (e.g., Meraki MV camera).
- Plug the AC power adapter into the injector and connect it to a power outlet.
Compatibility:
- Networking Standards: IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, and IEEE 802.3at.
- Data Rates: 10, 100, 1000 Mbit/s.
- Power Delivery: Designed to power devices compliant with the IEEE 802.3at standard (PoE Plus).
- Distance: Maximum operating distance of 100 meters over Cat5e or higher Ethernet cable.
Care:
- Keep the adapter in a well-ventilated area to prevent overheating.
- Avoid exposure to excessive moisture or direct sunlight.
- Clean the exterior with a dry, soft cloth. Do not use liquid cleaners.