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SFP-H25G-CU1M – 25GBase 1 Meter – Passive Copper Cable
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SFP-H25G-CU1M Description
SFP-H25G-CU1M is a Cisco 25GBASE-CR1 SFP28 direct-attach copper cable, providing high-speed 25Gbps connections over a 1-meter, low-latency, and energy-efficient passive twinax assembly. Also known as “Cisco 25G DAC 1m”, “SFP28 25G DAC Cable”, or “SFP28 1m Passive Copper”, this cable enables cost-effective short-distance links between Cisco switches and servers with SFP28 ports. Its robust build, industry-leading interoperability, and ease of deployment make it ideal for high-density data center and cloud applications, supporting Cisco’s standard warranty and environmental compliance for peace of mind.
Applications Scenarios
Data Center High-Speed Interconnects
Short-reach, low-latency connections between ToR switches and servers.
Enterprise Core/Spine Switching
High-throughput backbone links in enterprise networks.
Cloud & HPC Clusters
Dense server-to-switch aggregation in cloud or high-performance computing environments.
Platform Support
The Cisco SFP-H25G-CU1M DAC cable is fully compatible with a wide range of Cisco switches and servers featuring SFP28 ports. Typical supported platforms include, but are not limited to:
Certifications & Compliance
Model comparison
|
Feature/Spec |
SFP-H25G-CU1M |
SFP-H25G-CU2M | |
|---|---|---|---|
|
Type |
Passive DAC Cable |
Passive DAC Cable |
Optical Transceiver |
|
Data Rate |
25 Gbps |
25 Gbps |
25 Gbps |
|
Cable/Module Length |
1m |
2m |
up to 100m (OM4 MMF) |
|
Connector |
SFP28 to SFP28 |
SFP28 to SFP28 |
Dual LC |
|
Power Consumption |
1W (typical) |
1W (typical) |
1.2W |
|
Cable Type |
Copper |
Copper |
MMF |
|
Bail Latch Color |
Beige |
Brown |
Beige |
|
FEC Required |
No |
No (≤2m), BASE-R (2.5/3m) |
RS-FEC |
|
Operating Temperature |
0 to 70°C |
0 to 70°C |
0 to 70°C |
|
Hot-swappable |
Yes |
Yes |
Yes |
|
Platform Compatibility |
SFP28 Ports |
SFP28 Ports |
SFP28 Ports |
|
Use Case |
Rack-level |
Rack-level |
Rack or room-level |
Installation & Usage Tips
- Hot-swappable Design: The SFP-H25G-CU1M is fully hot-swappable—insert or remove the cable without powering down your equipment.
- Plug and Play: No additional configuration or software required. Simply insert into compatible SFP28 ports.
- Proper Handling: Always hold the cable by the connectors and avoid excessive bending. Maintain a minimum bend radius of 30mm to ensure signal integrity.
- Port Cleaning: Ensure the SFP28 cages are free of dust and debris before installation.
- Lock Mechanism: Use the integrated pull-tab for secure installation and easy removal; do not force or twist the cable.
- Stacking Cables: Avoid tightly bundling or sharply bending cables to prevent signal loss or physical damage.
- Operating Conditions: Confirm that the cable is used within specified operating temperature (0 to 70°C) and humidity levels.
- Compatibility: For optimal performance, use Cisco certified cables with Cisco switches and servers, and refer to the latest compatibility matrix for your platform.
Specifications
| Parameter | Value |
|---|---|
| Product Model | SFP-H25G-CU1M |
| Description | 25GBASE-CR1 SFP28 Passive Copper Cable, 1 meter |
| Type | Direct-Attach Copper (DAC), Passive |
| Data Rate | 25 Gbps |
| Cable Length | 1 meter |
| Connector Type | SFP28 to SFP28 |
| Maximum Power Consumption | 1W |
| Bail Latch Color | Beige |
| Operating Temperature Range | 0°C to 70°C (32°F to 158°F) |
| Storage Temperature Range | -40°C to 85°C (-40°F to 185°F) |
| Compliance | RoHS, SFF-8402, SFF-8472, IEEE 802.3by/cc |
| Platform Compatibility | Cisco SFP28 switch & server ports |
| Hot-swappable | Yes |
| Typical Applications | Data center, server, and storage interconnects |
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