Cisco QSFP-100G-CU1M Compatible 100G QSFP28 Passive DAC Twinax Cable - 1m
Warranty: Lifetime
Quick answer: The QSFP-100G-CU1M Cisco-compatible cable is a 1-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-CU1M. Resilient Tec sells it new, with a lifetime warranty and free US shipping from Knoxville, TN.
Cisco QSFP-100G-CU1M Compatible 100G QSFP28 Passive Direct Attach Copper (DAC) Cable - 1 Meter
This third-party 100G QSFP28 passive twinax DAC cable is fully compatible with Cisco QSFP-100G-CU1M and offers a reliable, low-cost alternative for short-reach intra-rack connections in data centers, enterprise networks, and AI/HPC environments.
Engineered to MSA standards, it delivers 100Gbps bandwidth (4x25Gbps lanes) with minimal power consumption and zero signal degradation over 1 meter. Backed by our lifetime warranty and rigorous testing—save significantly vs. OEM without compromising performance.
Key Features
- Cost-Effective Alternative: 70-90% savings vs. genuine Cisco—ideal for scaling networks on a budget.
- Plug-and-Play: Hot-pluggable QSFP28 connectors with pre-programmed EEPROM for seamless Cisco compatibility.
- Low Power & Latency: Passive design (<0.5W consumption) for energy-efficient, high-speed links.
- Lifetime Warranty: Fully tested in real-world environments.
- Use Cases: Intra-rack switch-to-switch, server-to-switch, or GPU node connections in AI clusters and hyperscale data centers.
Technical Specifications
- Data Rate: 100Gbps (100GBASE-CR4, 4x25Gbps NRZ)
- Connectors: QSFP28 to QSFP28
- Length: 1 meter (3.3 ft)
- Cable Type: Passive Twinax Copper (typically 30AWG)
- Power Consumption: <0.5W
- Operating Temperature: 0°C to 70°C
- Standards Compliance: IEEE 802.3bj, SFF-8665, SFF-8636, MSA compliant
Compatibility
Programmed for full compatibility with Cisco Nexus 9000/3000 series, Catalyst switches, and other QSFP28 platforms. Also works with multi-vendor environments including:
- Arista 7050X/7280R/7500R series
- Juniper QFX5200/5700
- Mellanox/NVIDIA switches
- Broadcom-based systems (MSA compliant)
Need a different length, breakout version, or bulk quote? Contact us—we source hard-to-find interconnects fast.
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-CU3M 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-CU1M Cisco-compatible cable is a 1-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-CU1M. Resilient Tec sells it new, with a lifetime warranty and free US shipping from Knoxville, TN.
Cisco QSFP-100G-CU1M Compatible 100G QSFP28 Passive Direct Attach Copper (DAC) Cable - 1 Meter
This third-party 100G QSFP28 passive twinax DAC cable is fully compatible with Cisco QSFP-100G-CU1M and offers a reliable, low-cost alternative for short-reach intra-rack connections in data centers, enterprise networks, and AI/HPC environments.
Engineered to MSA standards, it delivers 100Gbps bandwidth (4x25Gbps lanes) with minimal power consumption and zero signal degradation over 1 meter. Backed by our lifetime warranty and rigorous testing—save significantly vs. OEM without compromising performance.
Key Features
- Cost-Effective Alternative: 70-90% savings vs. genuine Cisco—ideal for scaling networks on a budget.
- Plug-and-Play: Hot-pluggable QSFP28 connectors with pre-programmed EEPROM for seamless Cisco compatibility.
- Low Power & Latency: Passive design (<0.5W consumption) for energy-efficient, high-speed links.
- Lifetime Warranty: Fully tested in real-world environments.
- Use Cases: Intra-rack switch-to-switch, server-to-switch, or GPU node connections in AI clusters and hyperscale data centers.
Technical Specifications
- Data Rate: 100Gbps (100GBASE-CR4, 4x25Gbps NRZ)
- Connectors: QSFP28 to QSFP28
- Length: 1 meter (3.3 ft)
- Cable Type: Passive Twinax Copper (typically 30AWG)
- Power Consumption: <0.5W
- Operating Temperature: 0°C to 70°C
- Standards Compliance: IEEE 802.3bj, SFF-8665, SFF-8636, MSA compliant
Compatibility
Programmed for full compatibility with Cisco Nexus 9000/3000 series, Catalyst switches, and other QSFP28 platforms. Also works with multi-vendor environments including:
- Arista 7050X/7280R/7500R series
- Juniper QFX5200/5700
- Mellanox/NVIDIA switches
- Broadcom-based systems (MSA compliant)
Need a different length, breakout version, or bulk quote? Contact us—we source hard-to-find interconnects fast.
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-CU3M 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
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