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Cisco

Cisco QSFP-H40G-CU0-5M | 40GbE QSFP+ DAC Passive Copper, 0.5m, 40GBASE-CR4, QSFP+ to QSFP+

SKU:QSFP-H40G-CU0-5M

Stock Status: Enquire

Regular price $357.50 AUD
Regular price
$357.50 AUD
$357.50 AUD
Regular price
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Description

Cost-effective 40GbE QSFP+ passive twinax copper DAC for ultra-short links up to 0.5 meters. Ideal for top-of-rack switch-to-server connections with zero power draw and minimal latency.

Features

- Ultra-low latency, zero-power 40G twinax connection
- Ideal for short top-of-rack links (0.5 m)
- Rugged, cost-effective passive design
- MSA-compliant QSFP+ ends for broad compatibility
- Simple plug-and-play deployment

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: What devices can I connect with this 0.5 m DAC?
A: Any QSFP+ 40GbE-capable switch, router, or NIC that supports passive 40GBASE-CR4 DAC interconnects.

Q: Why choose DAC over AOC?
A: DAC is lower cost, has near-zero latency, and requires no power, making it ideal for very short in-rack links.

Q: Is it hot-swappable?
A: Yes, it can be inserted or removed from powered QSFP+ ports that support hot-swap.

Q: Can this be used for 4x10G breakout?
A: No. This is a straight 40G-to-40G DAC. A 4x10G breakout cable is required for that topology.

Q: Does it support auto-negotiation to lower speeds?
A: QSFP+ DACs typically operate at the fixed 40G rate; check port capabilities for any special modes.

Technical Specifications

- Data rate: 40Gbps (40GbE)
- Form factor: QSFP+
- Cable type: Passive Twinax DAC
- Base standard: 40GBASE-CR4
- Length: 0.5 m
- Connectors: QSFP+ (male) to QSFP+ (male)
- Power: No external power; passive design
- Latency: Near-zero
- Hot-swappable: Yes
- MSA compliant; works with QSFP+ 40G ports that support DAC

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