| Product Type | Passive Direct Attach Copper (DAC) Cable |
| Form Factor | QSFP+ to QSFP+ |
| Cable Length | 1 m |
| Color | Black |
| Warranty | Lifetime Warranty |
| Power Requirements | Low power, passive (no separate power source required) |
| Wire Gauge | 30 AWG |
StarTech 1m 40G QSFP+ Direct Attach Cable (QSFPH40GCU1M)

Key Benefits
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- 100% Cisco QSFP-H40G-CU1M compatibility ensures seamless integration in existing Cisco network infrastructures.
- Lifetime warranty and TAA compliance make it ideal for enterprise and government buyers seeking long-term value and compliance.
- Hot-swappable, MSA-compliant design simplifies upgrades and maintenance while minimizing downtime.
Product Overview
100% Cisco QSFP-H40G-CU1M Compatible 1m 40G direct attach cable - 40 Gbps Passive Twinax Copper Low Power 2x QSFP+ Pluggable Connector - 10GbE Transceiver Module DAC for C9300 /C9200 /C9400 - Hot-Swappable MSA Compliant Lifetime WarrantySpecifications
Product Overview
Physical & Environmental
| Cable Jacket Material | PVC (Polyvinyl Chloride) |
| Minimum Operating Temperature | 0°C |
| Maximum Operating Temperature | 70°C |
| Humidity Range Operating | 10% to 85% RH (non-condensing) |
Cloud Management & Licensing
| Cloud Management | |
| Software Licensing Required | No |
Interfaces
| Connector A | QSFP+ male |
| Connector B | QSFP+ male |
| Data Transfer Rate | 40 Gbps |
| Interface Type | Passive Twinax Copper |
| Hot-Swappable | Yes |
| Supported Protocols | 10GBASE-CR, 40GBASE-CR4 |
| Compatibility | Compatible with Cisco QSFP-H40G-CU1M and other MSA compliant devices |
| Application | High-speed interconnect for switches, routers, servers, and network interfaces |
Compliance & Origin
| TAA Compliant | Yes |
| Country of Origin | Taiwan |
| RoHS Compliant | Yes |
| Certifications | CE, FCC, MSA compliant |
Advanced Security Features
| Encryption Support | No encryption, physical layer connection |
| Network Security Features | Not applicable for passive DAC cables |