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Cisco

Cisco QSFP-100G-CU0.5M | 100G | QSFP28 DAC | 100GBASE-CR4 | passive copper | 0.5m | QSFP28-to-QSFP28

SKU:QSFP-100G-CU0.5M

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Description

Low-latency 0.5m QSFP28 passive copper DAC for short-reach 100GbE interconnects. Ideal for in-rack top-of-rack to server or switch links with zero power consumption and excellent signal integrity.

Features

- Ultra-low latency, zero-power 100G connectivity
- Cost-effective alternative to optics for very short links
- Simple, robust QSFP28 direct-attach design
- Excellent EMI performance
- Hot-swappable ends for easy moves/adds/changes

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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FAQs

Technical Specifications

FAQs

Q: Will this work in any QSFP28 100GbE port?
A: It works in QSFP28 ports that support passive DAC. Check that your switch or NIC supports passive QSFP28 DACs.

Q: Can this cable be used for 4x25G breakout?
A: No. This is a straight QSFP28-to-QSFP28 DAC. Use a QSFP28-to-4xSFP28 breakout DAC for 4x25G.

Q: Does it require FEC?
A: Passive DACs generally do not require FEC at this short length, though host policies may still enable it.

Q: What is the typical application?
A: Top-of-rack to server or switch connections within the same rack or adjacent racks.

Technical Specifications

- Data rate: 100 Gb/s
- Form factor: QSFP28
- Type: Passive Copper DAC
- Ethernet standard: 100GBASE-CR4
- Length: 0.5 meter
- Connector: QSFP28 to QSFP28
- Lanes: 4 x 25G NRZ electrical
- Power: Passive (no power draw)
- Use case: Short in-rack or adjacent equipment connections

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