Gigabit Media Converters

Gigabit Media Converters: industrial, PoE, fiber-to-Ethernet for security. Browse specs for network.

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Unmanaged 2.5G Media Converter Single Mode Fiber to Ethernet, 1 SFP Port, 1 RJ45 100M/1G/2.5G Adaptive, Desktop for Office & Industrial Use

This 2.5G media converter single mode fiber to Ethernet bridges fiber and copper networks. Supports 100M/1G/2.5G auto-negotiation, up to 100km single-mode fiber, low latency, and easy plug-and-play setup.

CQ101
Port Description

1 x 2.5G SFP fiber port (SC/LC/ST optional via module), 1 x 10/100/1000/2.5G auto-negotiating RJ45 copper port
  • 2.5G fiber uplink via SFP slot – works with single-mode and multimode modules
  • Auto-negotiation 100M/1G/2.5G on the RJ45 copper port
  • Reach up to 100km on single-mode fiber (depending on SFP)
  • Broadcast storm suppression and IEEE 802.1p QoS for stable data flow
  • Ultra-low power consumption: 0.75W~3W – runs cool 24/7
  • Port lightning protection up to 4KV
  • Plug-and-play, no configuration or software needed
  • DIP switch to force SFP port to 1G mode for legacy equipment









Why You Need This Media Converter Single Mode Fiber to Ethernet

When your network runs out of copper distance or you need to connect two buildings without signal loss, a reliable media converter single mode fiber to Ethernet is the straightforward fix. The CQ101 is built for IT admins and network engineers who want a no-fuss device that extends Ethernet over long-haul single-mode fiber while keeping existing switches and routers. It handles 100M, 1G, and 2.5G speeds automatically, so you don’t have to swap hardware when upgrading part of your network.

Unlike bulky converters that run hot and waste power, this unit uses a low-power chipset (0.75W–3W) that stays cool even in a cramped patch panel. The single SFP slot accepts any standard 2.5G SFP module, giving you flexibility to pick single-mode or multimode optics based on your actual distance needs. You can easily cover up to 100 kilometers with a single-mode SFP – perfect for campus backbones or remote office links. The RJ45 port adapts to 100M/1G/2.5G Base-T, and the built-in MDI/MDI-X auto-crossover means any straight or crossover cable works.

For packet priority, the converter supports IEEE 802.1p QoS and broadcast storm suppression, which keeps your video streams or VoIP traffic clean during peak usage. The 4KV surge protection on the port adds an extra layer of safety in areas with unstable power or outdoor cabling. It comes with a 12V DC adapter, and you can swap it with a 7–15V DC supply if needed. Best of all, there’s zero configuration – plug in the SFP, connect the RJ45, and you’re live.

Typical deployments include extending a 2.5G link from a main switch to a camera bank, connecting a remote storage server, or linking two floors in an office building. If you’re tired of flaky media converters that drop packets or overheat, the CQ101 gives you consistent, low-latency performance with real-world reliability.

Standards IEEE802.3 10Base-T, IEEE802.3u 100Base-TX/FX, IEEE802.3ab 1000Base-T, IEEE802.3z 1000Base-SX/LX, IEEE802.3x Flow Control, IEEE802.1q VLAN, IEEE802.1p QoS, IEEE802.1d Spanning Tree
Copper port 1 x RJ45, 100M/1G/2.5G auto-negotiation, MDI/MDI-X auto-crossover, UTP-5E or higher, distance 100m
Fiber port 1 x SFP slot, 2.5Gbps, supports single-mode (9/125µm) and multimode (50/125µm, 62.5/125µm), wavelength 850/1310/1490/1550nm, distance 550m~100km
Forwarding mode Store-and-forward
Duplex mode Full-duplex / half-duplex auto-negotiation
MAC address table 2K
Frame memory 1Mbit
Network latency <20μs
Power supply External DC 12V/1A adapter (AC100~240V input), optional 7~15V/1A
Power consumption 0.75W~3W
Operating temperature -10°C~55°C
Storage temperature -40°C~70°C
Humidity 5%~90% non-condensing
Dimensions 94 x 70 x 26 mm
Weight 0.25 kg (unit only)
Housing Metal, black
Lightning protection 4KV on port
DIP switch A1 up: SFP 2.5G mode, RJ45 100M/1G/2.5G; A1 down: SFP 1G mode, RJ45 1G; A2: reserved


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