Enhanced from the current highly-praised version, PLANET POE-E304 Version 3, 1-Port 802.3bt PoE++ to 4-Port 802.3af/at Gigabit PoE Extender adopts Airoha LAN controller solution. It come with original stable performance and one brand-new built-in solid DIP switch function with advanced features as follows:
PoE Solution for Long-reach Distance
PLANET POE-E304 is a 1-Port 802.3bt PoE++ to 4-Port 802.3af/at Gigabit PoE Extender designed especially for the point to multipoint PoE application. The POE-E304 can obtain a maximum of 95-watt PoE power from IEEE 802.3bt PoE++ input port and supplies a maximum of 65-watt PoE power budget for 4 PoE output ports, extending both the reach of Gigabit Ethernet Data and IEEE 802.3af/802.3at Power over Ethernet over the standard 100m (328 ft.) Cat. 5/5e/6 UTP cable to 250m where up to 4 powered devices (PDs) can be powered at the same time. The POE-E304 provides a simple solution for adding PoE ports without running more cabling and achieves more flexible network applications without requiring an external power adapter.

DIP Switch for Operation Mode Selection
The POE-E304 offers “Standard”, “VLAN” or “Extend” mode. The POE-E304 operates as a normal Gigabit Ethernet Switch in the "Standard" operation mode.
The "VLAN" operation mode features port-based VLAN function that can help to prevent the connected clients’ multicast or broadcast storm from influencing each other.
In the "Extend" operation mode, the POE-E304 operates on a per-port basis at 10Mbps duplex operation but can transmit data over a distance of up to 250 meters overcoming the 100m limit on Ethernet UTP cable. With this brand-new feature, the POE-E304 provides an additional solution for distance extension, thus saving the cost of Ethernet cable installation.

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DIP Switch Mode
|
Function
|
| Standard (default) |
This mode makes the POE-E304 operate as a general switch and all ports operate at 10/100/1000Mbps auto-negotiation. |
| VLAN | This mode makes the POE-E304 operate as a VLAN isolation switch and 1. Port 1 to port 4 will isolate respectively. 2. Port 1 to port 4 can only communicate with port 5 (uplink port). |
| Extend | This mode makes the POE-E304 operate as a distance extension switch and port 1 to port 4 can only transmit distance of 250m at speed of 10Mbps. |
Plug and Play, Easy Cabling Installation
The POE-E304 can be easily installed by way of Plug and Play. It is used between a power source equipment (PSE) and the PD. The POE-E304 injects power to the PD without affecting the data transmission performance. The POE-E304 offers a cost-effective and quick solution to doubling the standard range of PoE from 100 to 250 meters. The POE-E304 is designed in a compact box containing 5 RJ45 ports, of which 1 "PoE IN" port functions as PoE (Data and Power) input and 4 "PoE OUT" ports on the other side functions as PoE (Data and Power) output. The "PoE OUT" port is also the power injector where DC voltage is transmitted over Cat. 5/5e/6 cable, and data and power are simultaneously transferred between the PSE and PD.
One Power Source for Multi Powered Devices
Is 100-meter cable long enough for a wide range of IP surveillance deployments? The answer is certainly not. To achieve the benefits of IP surveillance where IP cameras are installed in a remote location, PLANET POE-E304 is very useful for expanding the network already set up without worrying about the cabling distance limitation. In contrast, the conventional networking does not have the flexibility of network expansion.
The POE-E304 1-Port 802.3bt PoE++ to 4-Port 802.3af/at Gigabit PoE Extender requires very little installation time and does not require any additional setup or programming by using standard RJ45 cable from power sourcing device, such as 802.3bt PoE++ injector supplying 802.3bt PoE++ power, to the POE-E304 and converting power for 4 powered devices that are IEEE 802.3af/at PoE standard compliant, meaning any additional power adapter for IP cameras and wireless access points is not necessary.

Physical Port
Power over Ethernet
Layer 2 Features
Case and Installation
| Hardware Specifications | |
|---|---|
| Network Connector | PoE In Port 1 x 10/100/1000BASE-T Ethernet with 802.3bt PoE++ “Data + DC” in Auto MDI/MDI-X, auto-negotiation RJ45 connector PoE Out Port 4 x 10/100/1000BASE-T Ethernet with IEEE 802.3af/at PoE “Data + DC” out Auto MDI/MDI-X, auto-negotiation RJ45 connector |
| Switch Architecture | Store-and-Forward switch architecture |
| MAC Address Table | 2K MAC address table with auto learning function |
| Packet Buffer | 1 Mbits |
| Switch Fabric | 10Gbps |
| Switch Throughput | 7.44Mpps @ 64Bytes |
| Flow Control | IEEE 802.3x pause frame for full duplex Back pressure for half duplex |
| Jumbo Frame | 16Kbytes |
| Enclosure | Metal case |
| Installation | Desktop/Wall mountable |
| Dimensions (W x D x H) | 168 x 94 x 32 mm |
| Weignt | 415g |
| ESD Protection | ±8KV air gap discharge ±6KV contact discharge |
| Power Requirements | PoE In: IEEE 802.3bt or 4-pair 802.3at PoE+ compliant with voltage within 50V-56V DC External DC: 50~56V DC |
| Power Consumption | Max. 1.1 watts / 3.75 BTU (Power on without any connection) Max. 69.3 watts / 236 BTU (Full loading with 802.bt PoE++ Switch Input) |
| LED | System PWR (Amber) PoE Input Port (Port 5): 10/100/1000 LNK/ACT (Green) PoE Output Ports (Ports 1~4): 10/100/1000 LNK/ACT (Green) PoE: Power-in-use (Amber) |
| DIP Switch | Multi-operation mode options (Standard/VLAN/Extend) selection |
| Power over Ethernet | |
| PoE Standard | PoE in Port IEEE 802.3bt PoE++ Type 4 standard PD IEEE 802.3at PoE+ end-span/mid-span PD Per PoE out Port IEEE 802.3at Power over Ethernet Plus end-span PSE |
| PoE Power | PoE in Port 50~56V DC, max. 95 watts Per PoE out Port 49~55V DC, max. 30.8 watts |
| Power Pin Assignment | PoE in Port 1/2(-), 3/6(+), 4/5(+), 7/8(-) or 1/2(+), 3/6(-), 4/5(+), 7/8(-) Per PoE out Port 1/2(-), 3/6(+) |
| PoE Power Budget | 65 watts (max.) @ 802.3bt PoE++ Type 4 input |
| Standards Conformance | |
| Regulatory Compliance | FCC Part 15 Class A, CE |
| Standards Compliance | IEEE 802.3 Ethernet IEEE 802.3u Fast Ethernet IEEE 802.3ab Gigabit Ethernet IEEE 802.3x Flow Control IEEE 802.3af Power over Ethernet IEEE 802.3at Power over Ethernet Plus IEEE 802.3bt Power over Ethernet Plus Plus IEEE 802.3az Energy Efficient Ethernet(EEE) |
| Environment | |
| Operating | Temperature: 0 ~ 50 degrees C Relative Humidity: 5 ~ 95% (non-condensing) |
| Storage | Temperature: -10 ~ 70 degrees C Relative Humidity: 5 ~ 95% (non-condensing) |
| Date | Version | Description | Download |
|---|---|---|---|
| 2026-05-08 | 3.0 | POE-E304 |
|
| Date | Version | Description | Download |
|---|---|---|---|
| 2026-08-28 | 3.0 | Release for hardware version 3.0. |
|
| Ordering Information | |
|---|---|
POE-E304 |
1-Port 802.3bt PoE++ to 4-Port 802.3af/at Gigabit PoE Extender |