SFP-H25G-CU1M – 25G SFP28 DAC – 1m Passive Copper – No FEC Required
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SFP-H25G-CU1M Description
SFP-H25G-CU1M is a Cisco 25GBASE-CR1 SFP28 passive copper direct-attach cable for short 25 Gigabit Ethernet connections between supported Cisco SFP28 ports. It is the 1-meter member of the Cisco 25GBASE SFP28 passive copper cable family, using SFP28 connectors at both ends with a beige pull tab or bail latch, 0.1W maximum power consumption, and no host-port FEC requirement for this length. The cable fits BOMs that need a fixed 1-meter passive copper 25G link, with host support validated through Cisco compatibility documentation such as the Transceiver Module Group Compatibility Matrix.
Quick Specs
|
Parameter |
Specification |
|---|---|
|
Product ID |
SFP-H25G-CU1M |
|
Product type |
25GBASE-CR1 SFP28 passive copper cable |
|
Cable assembly type |
Direct-attach copper cable assembly |
|
Connector form |
SFP28 at both cable ends |
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Ethernet rate |
25 Gigabit Ethernet |
|
Cable length |
1 meter |
|
Pull tab or bail latch color |
Beige |
|
Maximum power consumption |
0.1W |
|
Host FEC requirement |
No FEC required for this 1-meter copper cable |
|
Operating temperature class |
Commercial 0 to 70 degrees C |
|
Compatibility reference |
Cisco Transceiver Module Group Compatibility Matrix |
Application Scenarios
SFP-H25G-CU1M fits short Cisco SFP28 port paths where a passive 25G copper DAC can cover the dressed route without moving to optical media or a longer fixed cable.
Cisco release notes list SFP-H25G-CU1M among supported 25G cable PIDs for C9200L Multigigabit Ethernet 25G uplinks and for the Catalyst 9300 25G uplink network module. The final device and software result still belongs in the Cisco compatibility matrix.
Cisco UCS 6600 documentation lists SFP-H25G-CU1M as a 25GBASE-CU SFP28 1-meter cable for unified ports. Receiving should keep it separate from the 2-meter and 3-meter passive copper spares because length and FEC behavior are different order checks.
Product Comparison
|
Parameter |
SFP-H25G-CU1M | |||
|---|---|---|---|---|
|
Product type |
25GBASE-CR1 SFP28 passive copper cable |
25GBASE-CR1 SFP28 passive copper cable |
25GBASE-CR1 SFP28 passive copper cable |
25GBASE-AOC SFP28 active optical cable |
|
Cable assembly type |
Direct-attach copper cable assembly |
Direct-attach copper cable assembly |
Direct-attach copper cable assembly |
Active optical cable assembly |
|
Connector form |
SFP28 at both cable ends |
SFP28 at both cable ends |
SFP28 at both cable ends |
SFP28 at both cable ends |
|
Ethernet rate |
25 Gigabit Ethernet |
25 Gigabit Ethernet |
25 Gigabit Ethernet |
25 Gigabit Ethernet |
|
Cable length |
1 meter |
2 meters |
3 meters |
1 meter |
|
Pull tab or bail latch color |
Beige |
Brown |
Orange |
Beige |
|
Maximum power consumption |
0.1W |
0.1W |
0.1W |
1W |
|
Host FEC requirement |
No FEC required |
No FEC required |
BASE-R FEC required |
BASE-R FEC or RS-FEC required |
|
Ordering description |
25GBASE-CR1 SFP28 Passive Copper Cable, 1-meter |
25GBASE-CR1 SFP28 Passive Copper Cable, 2-meter |
25GBASE-CR1 SFP28 Passive Copper Cable, 3-meter |
25GBASE-AOC SFP28 Active Optical Cable, 1-meter |
- In a SFP-H25G-CU1M vs SFP-H25G-CU2M comparison, both are passive copper SFP28 DACs with no host-port FEC requirement, but the order changes from a beige 1-meter cable to a brown 2-meter cable.
- The SFP-H25G-CU1M difference from SFP-H25G-CU3M is length plus FEC planning: the 1-meter cable does not require host FEC, while the 3-meter passive copper cable requires BASE-R FEC.
- SFP-H25G-CU1M vs SFP-25G-AOC1M is a same-length comparison between passive copper and active optical media, with 0.1W listed for the copper DAC and 1W listed for the AOC.
- For which model to choose, match the fixed cable length, copper or optical media family, FEC behavior, and Cisco host-support result before replacing one PID with another.
Selection Guide
1. Match the route to one meter
Select SFP-H25G-CU1M only when the measured Cisco SFP28 path fits a fixed 1-meter passive copper assembly after cable managers and service access are considered.
2. Keep short no-FEC copper lengths separate
SFP-H25G-CU2M stays in the same passive copper family and also has no host-port FEC requirement, but it is the 2-meter brown-latch order rather than the 1-meter beige-latch order.
3. Do not swap in AOC for a copper line
SFP-25G-AOC1M matches the 1-meter length but changes the media type to active optical cable and raises the listed maximum power value to 1W.
4. Validate the Cisco host path
Confirm the target switch, fabric interconnect, adapter, port type, software context, and TMG result before the BOM treats SFP-H25G-CU1M as supported.
Ordering Checklist
|
Check Item |
What to Confirm |
Why It Matters |
|---|---|---|
|
Exact PID |
SFP-H25G-CU1M appears on the purchase order and receiving label |
Prevents a 2-meter, 3-meter, or active optical 25G cable from being received against the wrong line |
|
Route length |
The installed path fits a fixed 1-meter assembly after cable dressing |
DAC assemblies cannot be shortened or extended during installation |
|
Cable family |
The design calls for 25GBASE-CR1 SFP28 passive copper |
Keeps the order from drifting to AOC, SR, LR, or another optical family |
|
FEC plan |
The host plan reflects that this 1-meter passive copper PID does not require FEC |
Avoids applying longer-cable FEC rules to the shortest copper SKU |
|
Cisco host record |
Platform, port, adapter, and software support are checked in Cisco compatibility documentation |
SFP28 form factor alone does not prove host support |
|
FCoE context |
Any FCoE deployment has appropriate host software support |
Keeps service enablement tied to Cisco’s host-software condition |
|
Receiving marker |
Beige latch or pull-tab color is checked after the PID scan |
Color helps warehouse inspection but should not replace exact part-number verification |
Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Product ID | SFP-H25G-CU1M | Product type | 25GBASE-CR1 SFP28 passive copper cable |
| Ordering description | 25GBASE-CR1 SFP28 Passive Copper Cable, 1-meter | Cable assembly type | Direct-attach copper cable assembly |
| Connector form | SFP28 at both cable ends | Ethernet rate | 25 Gigabit Ethernet |
| Cable length | 1 meter | Media class | Passive copper DAC |
| Pull tab or bail latch color | Beige | Maximum power consumption | 0.1W |
| Host FEC requirement | No FEC required for this 1-meter copper cable | FCoE support condition | Supported with appropriate host software support |
| Operating temperature class | Commercial | Commercial operating temperature | 0 to 70 degrees C |
| Storage temperature range | -40 to 85 degrees C | Standards references | SFF-8402, SFF-8472, IEEE 802.3, IEEE P802.3by |
| Catalyst 9200L support example | C9200L Multigigabit Ethernet 25G uplink notes list SFP-H25G-CU1M among supported cables | Catalyst 9300 support example | Catalyst 9300 25G uplink network module notes list SFP-H25G-CU1M among supported PIDs |
| UCS 6600 support example | Cisco lists SFP-H25G-CU1M as a 25GBASE-CU SFP28 1-meter cable for UCS 6600 unified ports | Standard warranty | 5 years |
| Compatibility reference | Cisco Transceiver Module Group Compatibility Matrix | Official support boundary | Verify the exact host and software release in Cisco compatibility documentation |
Get More Information
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Questions & Answers
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What is SFP-H25G-CU1M?
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Where does SFP-H25G-CU1M fit in top-of-rack design?
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How is SFP-H25G-CU1M different from SFP-H25G-CU3M?
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Can SFP-H25G-CU1M be used with SFP+ 10G ports?
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Why do teams choose SFP-H25G-CU1M over AOC?
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What cable dressing concern applies to SFP-H25G-CU1M?
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What causes SFP-H25G-CU1M link-up problems?
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Is SFP-H25G-CU1M a pluggable optic?
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