Optic.ca NGQ4X25-AO2M-OC — 100G QSFP28 to 4×25G SFP28 breakout active optical cable
The Optic.ca NGQ4X25-AO2M-OC is a 2-meter 100GBASE active optical breakout cable that converts a single QSFP28 port into four independent 25G SFP28 connections. Designed for high-density data centre and enterprise network environments, it enables cost-effective port-density expansion on NETGEAR M4350 and M4500 series switches without the need for additional switching hardware. Built to Tier 1 component standards, the cable ships 100% NETGEAR certified and pre-tested for plug-and-play reliability. It is backed by Optic.ca's limited lifetime warranty, making it a dependable long-term infrastructure investment for network integrators and IT resellers.
NETGEAR-Certified Plug-and-Play Compatibility
The NGQ4X25-AO2M-OC carries official NETGEAR certification, meaning it has been validated and registered in NETGEAR's switch firmware for use with the M4350 and M4500 switch families. Unlike generic third-party cables that may trigger compatibility warnings or require CLI overrides, this cable is recognised automatically at link-up, with no additional configuration steps. For network operators, this translates directly to faster deployment, eliminated troubleshooting risk at commissioning, and confidence that the link will remain stable after switch firmware updates.
1-to-4 Breakout Maximises Port Density
By converting a single QSFP28 100G port into four 25G SFP28 lanes, this cable allows network architects to serve four servers or access-layer switches from one uplink port on the aggregation or spine switch. In high-density server rooms and hyperconverged infrastructure deployments, this can defer or eliminate the need for additional switch hardware. The breakout approach also keeps cabling clean and structured: one cable at the spine end fans out to four individual SFP28 connections at the server or top-of-rack end.
Active Optical Technology for Clean, EMI-Free Signal
Unlike passive copper TwinAx DAC cables, active optical cables (AOC) use VCSEL lasers and optical fibre to transmit data, making them inherently immune to electromagnetic interference. This is relevant in dense rack environments where many copper cables running in parallel can introduce signal degradation. The optical signal also suffers no impedance-related insertion loss over the 2-metre run, ensuring the full 25 Gbps per lane arrives intact. The active electronics are integrated into the connector housings, so no external media converters or transceivers are required.
Digital Diagnostic Monitoring (DDM) for Proactive Management
The cable includes built-in DDM (also known as DOM — Digital Optical Monitoring), which exposes real-time optical performance parameters — including transmit/receive power levels and temperature — to the switch management interface. Network administrators can poll these values via SNMP or the switch CLI to spot signal degradation before it causes a link drop. In practice, this shifts fibre-link troubleshooting from reactive (a link is down) to proactive (a link is approaching threshold), reducing unplanned downtime in critical infrastructure.
Limited Lifetime Warranty and Tier 1 Quality
Optic.ca manufactures to Tier 1 component quality standards and backs the NGQ4X25-AO2M-OC with a limited lifetime warranty. All units are pre-tested before shipment. For network integrators, this removes the risk of early cable failure causing repeat site visits — a significant hidden cost in rack deployments that are difficult to access post-installation. The lifetime warranty also simplifies asset planning: the cable is expected to outlast the switching hardware it connects to, meaning it can be reused across switch refreshes without re-purchasing passive interconnects.
