Hallitsematon kytkin ALLNET ALL-SG8205PD

The ALLNET ALL-SG8205PD is an unmanaged L2 Gigabit Ethernet switch with five RJ-45 ports that support 10/100/1000 Mbps operation. The compact metal housing and fanless design provide quiet, durable operation. The device supports both PoE PD input and PoE PSE output, allowing the switch to be powered via its PD port and to supply power on two PSE ports over Cat5e or better cables. No external power supply is required when the switch is powered through the PD port.

Advantages

The switch offers automatic speed and duplex negotiation on all five ports, enabling easy migration from 10/100 Mbps to 1000 Mbps networks without configuration. Integrated PoE pass-through combines Powered Device (PD) input and Power Sourcing Equipment (PSE) output in one unit, simplifying cabling by transmitting data and power over the same Ethernet cable. Built-in protections include over-current and short-circuit protection, and front-panel LEDs provide clear status indication for each port and the overall system.

Suitable for

• Small office or home networks requiring additional Gigabit ports
• Deployments where PoE-powered devices must be chained or extended (e.g., wireless access points)
• VoIP phone installations that need both data and power over Ethernet
• Edge network segments or micro-segmentation to improve performance for multimedia and imaging applications

Key specifications

• Ports: 5 × RJ-45 Gigabit Ethernet (10/100/1000Base-T)
• PoE: 2 PSE ports, 1 PD port (compliant with IEEE 802.3af PSE and IEEE 802.3at PD input)
• Switch type: Unmanaged Layer 2
• MAC address table: 4000 entries
• Networking standards: IEEE 802.3, 802.3u, 802.3ab, 802.3af, 802.3at, 802.3x
• Power input: DC 48 V when used per product data (powered via PD port when available)
• Housing: Metal, palm-size; fanless
• Weight: 0.352 kg

How to use

Install the ALLNET ALL-SG8205PD on a flat surface or in a suitable enclosure. Connect upstream network equipment or a PoE PSE device to the PD input port to power the switch when external power is not available. Connect client devices to the remaining ports using Cat5e or better cables; PoE-capable devices can receive power from the two PSE ports. The switch is plug-and-play and requires no software configuration; LEDs indicate link/activity and PoE status for each port.

Recommendations

Use Cat5e or higher-rated twisted-pair Ethernet cables for reliable Gigabit performance and PoE delivery. Ensure the supplying PSE can provide sufficient power to the PD input, and factor in the total power budget of connected PSE devices. Keep the unit in a ventilated area even though it is fanless, and avoid exposure to extreme temperatures or moisture.