Qoltec Bidirectional Media Converter Switch Ethernet 2x RJ45 2x SFP | 1000Mb/s | 5V

With a switching capacity of 8 Gbps and support for jumbo frames up to 9K bytes, the Qoltec 51946 media converter switch delivers high-throughput connectivity for demanding network environments. This bidirectional device combines two Gigabit RJ45 ports with two Gigabit SFP slots, enabling flexible copper-to-fibre conversion and network extension without complex configuration.

Overview

The Qoltec 51946 is a standalone desktop media converter switch that bridges Ethernet copper and fibre optic segments. It features two 10/100/1000 Mbps RJ45 ports and two 1000 Mbps SFP ports, allowing you to connect switches, routers, or servers over short distances with copper or extend links up to several kilometres using standard SFP modules (sold separately). The unit operates bidirectionally, meaning any port can serve as input or output, simplifying integration into existing networks.

What stands out

• Dual Gigabit RJ45 and dual Gigabit SFP ports for versatile connectivity
• Bidirectional operation for flexible network design
• Metal housing for durability and heat dissipation
• Supports IEEE 802.3, 802.3u, 802.3ab, and 802.3z standards
• Low power consumption under 5W with 5V DC input

Technical details

• RJ45 ports: 2 x 10/100/1000 Mbps auto-negotiation
• SFP slots: 2 x 1000 Mbps (SFP modules not included)
• Switching capacity: 8 Gbps
• MAC address table: 1K entries
• Packet buffer memory: 128KB
• Jumbo frame support: 9K bytes
• LED indicators: Power, Link/Act for each port
• Power supply: DC 5V, consumption <5W
• Operating temperature: 0°C to 50°C
• Housing: Metal

Our verdict

The Qoltec 51946 is a reliable, cost-effective solution for network administrators needing to bridge copper and fibre segments without investing in managed switches. Its compact metal design and plug-and-play operation make it ideal for small to medium business networks, campus environments, and industrial applications where durability matters.