QSFP-100G-CU3M Cisco Compatible, 100G QSFP28 Passive DAC Cable - 3m
Warranty: Lifetime
Quick answer: The QSFP-100G-CU3M Cisco-compatible cable is a 3-meter passive 100G QSFP28 to QSFP28 direct-attach copper (DAC) cable (100GBASE-CR4) for switch-to-switch and switch-to-server links in the same or adjacent racks. It is coded to work in Cisco switches that call for QSFP-100G-CU3M. Resilient Tec sells it new, with a lifetime warranty and free US shipping from Knoxville, TN.
Cisco Compatible 100G QSFP28 Passive DAC Cable - 3 Meters
This third-party 100G QSFP28 Passive DAC cable is fully compatible with Cisco QSFP-100G-CU3M, delivering reliable 100GbE connectivity for short-range high-speed networking applications up to 3 meters. Ideal for enterprise networking, AI/HPC clusters, top-of-rack (ToR) switching, and hyperscale data centers requiring low-latency and cost-effective copper interconnects.
Built to QSFP28 MSA and IEEE 802.3bj standards, it features QSFP28 to QSFP28 connectivity and pre-programmed EEPROM compatibility for seamless deployment with Cisco networking platforms. Backed by our lifetime warranty and rigorous testing—enjoy significant savings versus genuine Cisco OEM cables while maintaining reliable, high-performance connectivity.
Key Features
- Massive Cost Savings: Premium compatible DAC cables at a fraction of OEM pricing—ideal for scaling enterprise and AI networking environments affordably.
- Plug-and-Play Compatibility: Pre-programmed EEPROM enables seamless deployment with Cisco networking platforms.
- High-Speed 100GbE Performance: Delivers reliable 100Gb Ethernet connectivity for enterprise networks, switches, and storage environments.
- Low-Latency Passive Copper Design: Passive Twinax construction minimizes latency and eliminates signal amplification requirements.
- Short-Range High-Density Connectivity: Ideal for top-of-rack and end-of-row switching in data center environments.
- Cost-Effective Copper Interconnect: Significantly more affordable than fiber-optic alternatives for short-reach applications.
Technical Specifications
- Form Factor: QSFP28
- Data Rate: 100GbE
- Cable Type: Passive Twinax Copper
- Connector: QSFP28 to QSFP28
- Max Reach: 3 meters
- Standards Compliance: QSFP28 MSA, IEEE 802.3bj
- Features: Pre-programmed EEPROM, plug-and-play
Compatibility
Programmed for compatibility with Cisco and MSA-compliant systems, including:
- Cisco networking platforms
- Cisco Catalyst and Nexus switches
- Enterprise Ethernet networks
- AI and HPC cluster environments
- Hyperscale and cloud data center deployments
Need different reach options, compatible cables, or bulk quotes? Contact us—we specialize in high-performance networking solutions for AI, HPC, and data center environments.
Frequently Asked Questions
DAC or optics with fiber: which should I use?
For short in-rack runs, a passive DAC costs less, draws almost no power and adds less latency than two optics plus a fiber cable. Passive 100G DACs are made for runs of a few meters; for longer runs use optics with fiber or an active optical cable.
Does it need power or configuration?
No. It is passive copper with no optics; the port reads its coding and brings the link up as 100GBASE-CR4.
Compatible cable or genuine Cisco: what is the difference?
This is a new third-party cable programmed (coded) to be recognized by Cisco equipment that calls for this part number, at a fraction of the Cisco-branded price. Choose the genuine Cisco part only if your support contract or internal policy requires Cisco-branded parts.
What warranty and shipping come with it?
Resilient Tec's lifetime warranty. US standard shipping is free with no minimum, and orders typically arrive in 3 to 5 days.
You Might Also Need
QSFP-100G-CU1M Cisco Compatible, 100G QSFP28 Passive DAC Cable
QSFP-4SFP25G-CU1M Cisco Compatible, 100G QSFP28 to 4xSFP28 Passive Breakout DAC Cable
QSFP-100G-AOC10M Cisco Compatible, 100G QSFP28 Active Optical Cable
All DAC cables
Quick answer: The QSFP-100G-CU3M Cisco-compatible cable is a 3-meter passive 100G QSFP28 to QSFP28 direct-attach copper (DAC) cable (100GBASE-CR4) for switch-to-switch and switch-to-server links in the same or adjacent racks. It is coded to work in Cisco switches that call for QSFP-100G-CU3M. Resilient Tec sells it new, with a lifetime warranty and free US shipping from Knoxville, TN.
Cisco Compatible 100G QSFP28 Passive DAC Cable - 3 Meters
This third-party 100G QSFP28 Passive DAC cable is fully compatible with Cisco QSFP-100G-CU3M, delivering reliable 100GbE connectivity for short-range high-speed networking applications up to 3 meters. Ideal for enterprise networking, AI/HPC clusters, top-of-rack (ToR) switching, and hyperscale data centers requiring low-latency and cost-effective copper interconnects.
Built to QSFP28 MSA and IEEE 802.3bj standards, it features QSFP28 to QSFP28 connectivity and pre-programmed EEPROM compatibility for seamless deployment with Cisco networking platforms. Backed by our lifetime warranty and rigorous testing—enjoy significant savings versus genuine Cisco OEM cables while maintaining reliable, high-performance connectivity.
Key Features
- Massive Cost Savings: Premium compatible DAC cables at a fraction of OEM pricing—ideal for scaling enterprise and AI networking environments affordably.
- Plug-and-Play Compatibility: Pre-programmed EEPROM enables seamless deployment with Cisco networking platforms.
- High-Speed 100GbE Performance: Delivers reliable 100Gb Ethernet connectivity for enterprise networks, switches, and storage environments.
- Low-Latency Passive Copper Design: Passive Twinax construction minimizes latency and eliminates signal amplification requirements.
- Short-Range High-Density Connectivity: Ideal for top-of-rack and end-of-row switching in data center environments.
- Cost-Effective Copper Interconnect: Significantly more affordable than fiber-optic alternatives for short-reach applications.
Technical Specifications
- Form Factor: QSFP28
- Data Rate: 100GbE
- Cable Type: Passive Twinax Copper
- Connector: QSFP28 to QSFP28
- Max Reach: 3 meters
- Standards Compliance: QSFP28 MSA, IEEE 802.3bj
- Features: Pre-programmed EEPROM, plug-and-play
Compatibility
Programmed for compatibility with Cisco and MSA-compliant systems, including:
- Cisco networking platforms
- Cisco Catalyst and Nexus switches
- Enterprise Ethernet networks
- AI and HPC cluster environments
- Hyperscale and cloud data center deployments
Need different reach options, compatible cables, or bulk quotes? Contact us—we specialize in high-performance networking solutions for AI, HPC, and data center environments.
Frequently Asked Questions
DAC or optics with fiber: which should I use?
For short in-rack runs, a passive DAC costs less, draws almost no power and adds less latency than two optics plus a fiber cable. Passive 100G DACs are made for runs of a few meters; for longer runs use optics with fiber or an active optical cable.
Does it need power or configuration?
No. It is passive copper with no optics; the port reads its coding and brings the link up as 100GBASE-CR4.
Compatible cable or genuine Cisco: what is the difference?
This is a new third-party cable programmed (coded) to be recognized by Cisco equipment that calls for this part number, at a fraction of the Cisco-branded price. Choose the genuine Cisco part only if your support contract or internal policy requires Cisco-branded parts.
What warranty and shipping come with it?
Resilient Tec's lifetime warranty. US standard shipping is free with no minimum, and orders typically arrive in 3 to 5 days.
You Might Also Need
QSFP-100G-CU1M Cisco Compatible, 100G QSFP28 Passive DAC Cable
QSFP-4SFP25G-CU1M Cisco Compatible, 100G QSFP28 to 4xSFP28 Passive Breakout DAC Cable
QSFP-100G-AOC10M Cisco Compatible, 100G QSFP28 Active Optical Cable
All DAC cables