OPTIC.ca NGQ4X25-CU1M-OC — 100G to 4×25G NETGEAR-certified breakout DAC cable
The OPTIC.ca NGQ4X25-CU1M-OC is a 100GBASE QSFP28 to 4×25G SFP28 passive copper twinax breakout Direct Attach Cable (DAC), designed for short-reach, high-density data centre interconnects. Certified 100% compatible with NETGEAR switches, it allows a single 100G QSFP28 port to fan out into four independent 25G SFP28 connections — ideal for connecting 100G-capable spine switches to 25G server NICs or top-of-rack equipment without additional transceivers or optical infrastructure. Built-in Digital Diagnostic Monitoring (DDM) provides real-time visibility into cable health. Backed by OPTIC.ca's limited lifetime warranty and Tier 1 component quality, it is pre-tested before shipment for plug-and-play reliability.
100G to 4×25G Breakout — Maximize Port Density
This cable fans a single 100G QSFP28 switch port out into four independent 25G SFP28 connections. In practice, a data centre can connect four 25G server NICs or ToR devices to a single high-density 100G spine port, using existing cabling budget and switch ports far more efficiently than separate transceivers would allow. This makes it straightforward to stage 25G server deployments while keeping the core fabric at 100G — no optical converters, no extra power draw.
Passive Copper — Zero Extra Power, Minimal Latency
Being a passive DAC, the cable requires no external power and draws negligible energy from the host ports. Compared to active optical cables or transceiver-plus-fibre solutions, passive copper eliminates a failure point (active components), reduces overall rack power consumption, and delivers inherently lower latency — an important factor for latency-sensitive workloads such as storage networking, financial trading infrastructure, or high-performance computing clusters. The twinax construction provides excellent EMI shielding within a dense patch environment.
Built-in DDM for Live Cable Health Visibility
The integrated Digital Diagnostic Monitoring (DDM) interface exposes real-time electrical parameters — including temperature, supply voltage, and signal integrity metrics — directly to the switch management plane. This gives network administrators immediate diagnostic data without physical inspection, accelerating fault isolation and reducing unplanned downtime. For managed environments running NETGEAR M4350 or M4500 series switches, DDM readings appear natively in the switch UI and SNMP/CLI monitoring tools.
100% NETGEAR Certified — Guaranteed Compatibility
OPTIC.ca operates under a formal partnership with NETGEAR, and each cable in this series is validated against NETGEAR's latest-generation switch platforms before being sold. NETGEAR publishes a compatibility matrix on their support knowledge base (kb.netgear.com) listing approved OPTIC.ca SKUs. This certification removes interoperability risk for integrators deploying into NETGEAR M4350, M4500, or similar switch environments — the switch firmware will not flag the cable as unsupported, and the customer avoids the common support headache of uncertified third-party DACs being locked out by vendor whitelisting.
