Description
About Cisco QSFP-H40G-CU5M 40G Copper Direct Attached Cable
The Cisco QSFP-H40G-CU5M is a cost-effective 40 Gigabit Ethernet (40GbE) solution for short-distance connections within a rack or between adjacent racks. This passive copper direct attach cable (DAC) transmits data over twinaxial copper for up to 5 meters.
Product Description Step by Step:
Short Specs
| Feature | Specification |
|---|---|
| Type | 40GBASE-CR4 QSFP+ Direct Attach Copper Cable |
| Reach | 5 meters (16.4 feet) |
| Interface | QSFP+ to QSFP+ |
| Cable Type | Passive Twinax Copper |
More Specs
| Property | Value |
|---|---|
| Product Code | QSFP-H40G-CU5M |
| Description | Cisco 40GBASE-CR4 QSFP direct-attach copper cable, 5-meter, passive |
| Dimensions | 13.5 x 18.4 x 72.4 mm |
| Wavelength (nm) | – |
| Cable Type | Direct-attach copper cable assembly |
| Core Size (microns) | – |
| Modal Bandwidth (MHz-km) | – |
| Cable Distance | 5m |
| Power Consumption (W) | 1.5 |
| Pull Tab Color | Gray |
Detail Specs
| Specification | Value |
|---|---|
| Description | Cisco 40GBASE-CR4 QSFP direct-attach copper cable, 5-meter, passive |
| Dimensions (mm) | 13.5 x 18.4 x 72.4 |
| Cable Type | Direct-attach copper cable assembly |
| Cable Distance (m) | 5 |
| Power Consumption (W) | 1.5 |
| Pull Tab Color | Gray |
| Commercial Temperature (°C) | 0 to 70 |
| Storage Temperature (°C) | -40 to 85 |
| Standards | GR-20-CORE: Generic Requirements for Optical Fiber and Optical Fiber Cable<br>GR-326-CORE: Generic Requirements for Single-Mode Optical Connectors and Jumper Assemblies<br>GR-1435-CORE: Generic Requirements for Multifiber Optical Connectors<br>IEEE 802.3ba (-SR4, -LR4)<br>IEEE 802.3ae (-CSR4)<br>QSFP+ MSA SFF-8436<br>SFP+ MSA SFF-8431 and -8461<br>RoHS 6 |
| Safety | Cable jacket of QSFP copper modules is UL E116441 Compliant<br>QSFP copper cables are ELV Compliant |
Product Description
The Cisco QSFP-H40G-CU5M is a 40 Gigabit per second (Gbps) QSFP+ to QSFP+ direct attach copper cable (DAC) designed for use in short-distance Ethernet connections. It is a cost-effective solution for high-bandwidth applications such as data center interconnects and high-performance computing clusters.
The QSFP-H40G-CU5M utilizes passive copper twinax cabling to transmit data over short distances. This makes it a simpler and more affordable alternative to fiber optic cables, which are required for longer distances. However, the reach of DACs is limited due to signal degradation over copper.
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