Dorelink
Dorelink
Engineered for high-speed signal integrity and maximum port density in enterprise-grade networking hardware.
The backbone of modern data centers and telecommunication hubs relies on the scalability of stacked port configurations.
In the era of 5G, AI, and Big Data, the demand for bandwidth is insatiable. Network equipment manufacturers (NEMs) are constantly pushed to increase port density without expanding the physical footprint of switches and routers. This is where SFP Cage 2xN (Stacked Ports) technology becomes critical. By stacking two rows of SFP ports, engineers can effectively double the I/O capacity of a standard 1U rack unit.
Globally, the market for stacked cages is driven by the transition from 10G SFP+ to 25G SFP28 and 56G/112G PAM4 signaling. North American and European data center operators are leading the adoption of 2x8 and 2x12 configurations to support massive leaf-and-spine architectures. Meanwhile, the industrial sector is integrating these connectors into ruggedized edge computing units where space is at a premium.
Dorelink Optical Communications Co., Ltd. has positioned itself at the forefront of this shift, providing TE and Molex compatible solutions that meet the rigorous standards of signal integrity and EMI shielding required by global Tier-1 enterprises.
Why Chinese manufacturing leads the world in optical interconnect components through vertical integration and R&D speed.
With 120 dedicated engineers, we released 85 new models last year alone. Our ability to prototype and validate custom 2xN configurations within weeks gives our clients a significant time-to-market advantage.
Our 18,500㎡ facility employs 45 QC professionals. We implement IQC, IPQC, and FQC protocols that mirror the world's strictest telecommunication standards, ensuring 99.9% reliability.
Leveraging 850+ long-term partners, we mitigate global logistics risks. Our $18M annual export revenue is a testament to our consistency in high-volume delivery across North America and Europe.
Years Industry Exp.
Manufacturing Base
R&D Engineers
Global Partners
Deep dive into EMI shielding, thermal management, and Press-fit technology for stacked port applications.
As data rates climb to 25Gbps per channel and beyond, Electromagnetic Interference (EMI) becomes the primary enemy. Our 2xN cages feature 360-degree shielding gaskets and multi-point ground tabs. This ensures that crosstalk between the upper and lower ports is minimized, maintaining a clean "eye diagram" for high-speed transceivers.
We specialize in Press-fit technology. Unlike traditional soldering, Press-fit provides a solder-less, mechanically robust connection that is easier to rework and eliminates thermal stress on the PCB. Our "Action Pin" design ensures consistent contact resistance even under vibration.
System monitoring is vital. Our stacked cages often integrate multi-port light pipes (available in various heights and shapes) to channel LED signals from the PCB to the front panel, providing clear status indicators for every port in the 2xN matrix.
From the urban data center to the industrial edge, 2xN SFP cages are ubiquitous.
Used in Top-of-Rack (ToR) switches to maximize the number of fiber connections per RU. Our 2x6 and 2x8 SFP+ cages are the standard for 10G/25G deployments.
Core routers and BNG (Broadband Network Gateways) utilize stacked cages to handle massive subscriber traffic in metro networks.
Ruggedized 2x1 and 2x2 configurations are integrated into industrial Ethernet switches used in smart factories and smart grids, providing high-speed uplinks in compact DIN-rail mounts.
Staying ahead of the curve: Where the industry is heading in 2025 and beyond.
The industry is currently pivoting towards SFP-DD (Double Density) and QSFP-DD, but the classic 2xN SFP configuration remains the workhorse for 10G and 25G networks due to its cost-to-performance ratio. We are seeing a significant trend in Thermal Management Optimization. As transceivers consume more power (especially Tunable DWDM and Coherent modules), the cage must act as a heat sink. Dorelink is developing cages with integrated heat sinks and optimized airflow paths to support these "hot" modules.
Furthermore, Silicon Photonics integration is driving the need for tighter tolerances in connector alignment. Our R&D team is working on ultra-low-profile 2xN cages that facilitate Co-Packaged Optics (CPO) initiatives, reducing the distance between the switch ASIC and the optical interface.
Expert answers to common procurement and technical queries regarding 2xN SFP Cages.
While physically similar, SFP28 cages are engineered for 25Gbps+ speeds with stricter signal integrity requirements and enhanced EMI shielding to handle higher frequencies.
Yes, our products are designed as "drop-in replacements" with identical PCB footprints, mechanical dimensions, and electrical performance to major brands like TE and Molex.
Absolutely. We offer various light pipe orientations (top, bottom, or side-exit) and lens shapes (round, square, flat) to match your front-panel design.
For standard 2x4 or 2x6 configurations, we maintain a rolling stock. Custom or high-volume orders typically ship within 3-4 weeks from our China facility.
We use automated optical inspection (AOI) and mechanical force testing to ensure every pin meets the required insertion and retention force specifications.
Yes, we provide STEP or IGS files to help your hardware engineers integrate our cages into your board layouts seamlessly.
Explore our full range of EMI shielded and through-hole stacked cage solutions.
