D-Link DEM-CB100S28 25G SFP28 Passive Direct Attach Cable 1m
The D-Link DEM-CB100S28 is a high-performance 25G SFP28 passive twinaxial direct attach cable (DAC) designed for data-intensive mission-critical connectivity in data centres, server environments, and enterprise networks. With 25 Gbps data transmission speeds, this 1-metre cable delivers ultra-fast connectivity between switches, servers, and storage systems while offering lower latency and power consumption than traditional fibre optic or copper Ethernet cables. Ideal for Top-of-Rack (ToR) and in-rack connections, the DEM-CB100S28 provides a cost-effective, plug-and-play solution for short-distance high-bandwidth applications.
Why Choose the D-Link DEM-CB100S28?
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25 Gbps High-Speed Data Transfer: Supports data rates up to 25 Gbps for next-generation network infrastructure
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Passive Twinaxial Design: No active electronics means lower power consumption (typically less than 0.1W), reduced heat output, and enhanced reliability
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Plug-and-Play Simplicity: SFP28 connectors on both ends eliminate the need for expensive SFP28 transceivers, significantly reducing deployment costs
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Industry-Standard Compliance: Fully compliant with SFF-8402, SFF-8432, EIA-364, EIA-364-1000.01, and UL 94 standards
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Wide Operating Temperature Range: Operates from -40°C to 75°C, suitable for demanding environments
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Designed for D-Link Switches: Optimised for compatibility with D-Link 25GbE switches including the DMS-3130 Series and other enterprise-grade networking equipment
High-Speed 25G Connectivity for Modern Data Centres
As network bandwidth demands continue to grow, the 25 Gigabit Ethernet standard has emerged as the sweet spot for modern data centre connectivity. The DEM-CB100S28 leverages Small Form-factor Pluggable 28 (SFP28) technology to deliver 25 Gbps throughput over a compact, flexible copper twinaxial cable. This makes it perfect for connecting servers to Top-of-Rack switches, switch-to-switch uplinks within the same rack, or storage area network (SAN) connections where low latency is critical.
Unlike optical fibre transceivers, this passive copper DAC cable requires no power input and generates minimal heat, making it an energy-efficient choice for high-density rack environments. The 1-metre cable length is optimised for in-rack connections, providing the flexibility needed for clean cable management while minimising signal loss.
Cost-Effective Alternative to Fibre Optics
Traditional fibre optic connections require SFP28 transceivers on both ends of the cable, significantly increasing hardware costs and power consumption. The DEM-CB100S28 direct attach cable integrates the SFP28 connectors directly into the cable assembly, eliminating the need for separate transceivers. This results in:
- Lower upfront hardware investment
- Reduced power consumption and cooling costs
- Simplified installation and maintenance
- Improved port density without the bulk of external transceivers
For short-reach applications within 1-3 metres, passive DAC cables like the DEM-CB100S28 offer superior cost-effectiveness and energy efficiency compared to optical alternatives.
Built to Industry Standards
The DEM-CB100S28 is engineered to meet and exceed industry standards for 25G connectivity. Compliance with SFF-8402 and SFF-8432 specifications ensures broad compatibility with multi-vendor equipment, while EIA-364 and UL 94 certifications guarantee mechanical and fire safety standards. This makes the cable suitable for deployment in mission-critical environments where reliability and safety are paramount.
The cable features robust twinaxial copper construction with precision shielding to maintain signal integrity across the full 25 Gbps bandwidth. Its passive design means there are no active components to fail, resulting in exceptional long-term reliability and minimal maintenance requirements.
Ideal Applications
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Data Centre Networking: Top-of-Rack switch to server connections
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Enterprise Core Networks: High-speed switch-to-switch uplinks
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Storage Area Networks: Low-latency connections between storage arrays and servers
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High-Performance Computing: Cluster interconnects requiring maximum throughput
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Virtualised Environments: Supporting bandwidth-intensive VM migration and storage traffic
What's in the Box
- D-Link DEM-CB100S28 25G SFP28 to SFP28 Direct Attach Cable (1 metre)
Full Specifications
| Connector Type |
SFP28 to SFP28 |
| Cable Type |
Passive Twinaxial Copper (Direct Attach Cable) |
| Cable Length |
1 metre |
| Data Rate |
Up to 25 Gbps |
| Compliance Standards |
SFF-8402, SFF-8432, EIA-364, EIA-364-1000.01, UL 94 |
| Operating Temperature |
-40°C to 75°C |
| Power Consumption |
<0.1W (passive cable, no power required) |
| Compatible Switches |
D-Link DMS-3130-30TS and other 25GbE SFP28-equipped switches |
| Warranty |
5 Years (D-Link Limited Warranty) |
Specifications are sourced from the manufacturer product page and may be updated.
