Network switch HP J8705A-RFB 20-port 10/100/1000 PoE

The HP J8705A-RFB 20-port 10/100/1000 PoE network switch delivers wired connectivity and Power over Ethernet (PoE) for small to medium-sized networks. This switch supports twenty Gigabit-capable RJ-45 ports that automatically negotiate 10/100/1000 Mbps link speeds and supply power to compatible devices over standard Ethernet cabling. The integrated PoE capability allows consolidation of power and data for devices such as IP phones, network cameras and wireless access points, helping to simplify cabling and deployment in offices, retail sites and branch locations.

Advantages

The HP J8705A-RFB combines Gigabit Ethernet throughput with PoE support on multiple ports, enabling simultaneous data transmission and device powering without separate power adaptors. Its twenty-port density suits edge and access-layer deployments, while auto-negotiation and auto-MDI/MDIX simplify connection setup. The switch is compatible with standard IEEE Ethernet devices, providing a stable baseline for network expansion and device consolidation in managed or unmanaged environments.

Suitable for

• Small office LANs requiring both data and PoE power delivery
• IP telephony deployments where phones need inline power
• Surveillance systems using PoE network cameras
• Wireless access point installations that benefit from centralized power
• Branch offices and retail locations with constrained cabling infrastructure

Key specifications

• Brand: HP
• Model / MPN: J8705A-RFB
• EAN: 5712505794739
• Ports: 20 × RJ-45 10/100/1000 Mbps
• PoE: Power over Ethernet on ports (standard-based PoE support)
• Deployment: Access/edge switch for small to medium networks
• Category: Switches

How to use

Install the HP J8705A-RFB on a stable surface or mount it in a rack if suitable mounting hardware is available. Connect each network device to the switch using Cat5e or better Ethernet cables. The switch will auto-negotiate link speed and duplex with connected devices. For PoE-powered devices, simply plug the device into a PoE-capable port; the switch supplies power over the Ethernet cable when the device supports the required PoE standard. Connect the switch uplink port to your router or core network switch to provide broader network and Internet access.

Usage recommendations

Use quality Category 5e or Category 6 cabling to ensure reliable Gigabit links and proper PoE power delivery. Verify the total PoE power budget of the switch and plan connected powered devices accordingly to avoid exceeding available power. For deployments with critical uptime requirements, place the switch in a ventilated area and consider an uninterruptible power supply (UPS) to protect against power interruptions.