QSFP-100G-CU3M – 100G QSFP DAC – 3m Length – Passive Copper Cable
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QSFP-100G-CU3M Description
QSFP-100G-CU3M is a Cisco QSFP-100G family 100GBASE-CR4 passive copper direct-attach cable for short 100G QSFP-to-QSFP links between Cisco QSFP-100G ports within a rack or across adjacent racks. This exact SKU provides a 3 m fixed cable length, uses the Cisco QSFP direct-attach copper cable format rather than an optical transceiver or breakout cable, and is documented with a 7 mm cable diameter, 50 mm bend radius, and orange pull tab for cable identification in dense 100G rack cabling.
Quick Specs
|
Parameter |
Specification |
|---|---|
|
Product ID |
QSFP-100G-CU3M |
|
Product type |
100GBASE-CR4 QSFP passive copper cable |
|
Ordering description |
Cisco 100GBASE-CR4 QSFP Passive Copper Cable, 3-meter |
|
Cable assembly type |
Direct-attach copper cable assembly |
|
Interface role |
QSFP-to-QSFP 100G direct-attach cable |
|
Supported Ethernet rate |
100 Gigabit Ethernet |
|
Cable length |
3 meters |
|
Power consumption |
1.5W per end |
|
Pull tab color |
Orange |
|
QSFP connector module dimensions |
13.5 x 18.4 x 72.4 mm maximum outer dimensions |
|
QSFP connector module weight |
100 grams or less |
|
Commercial operating temperature |
0 to 70 degrees C |
|
Storage temperature range |
-40 to +85 degrees C |
Application Scenarios
Choose QSFP-100G-CU3M when a 3-meter cable path is enough for a straight 100G QSFP-to-QSFP connection. It is suited to short copper interconnects where optical modules and separate fiber jumpers would add parts to receive, label, and troubleshoot.
This SKU helps teams standardize short 100G direct-attach links around Cisco-listed QSFP copper cable lengths. Engineers should still validate the exact host device, port type, and software release in Cisco compatibility documentation before the purchase request is approved.
Keep QSFP-100G-CU3M separate from the 1-meter, 2-meter, and 5-meter QSFP-100G-CU cables in warehouse and rack-side spares. The product names are close, but the documented length, pull tab color, cable diameter, and bend radius can affect receiving checks and rack routing.
Product Comparison
|
Parameter |
QSFP-100G-CU3M |
QSFP-100G-CU1M |
QSFP-100G-CU2M | |
|---|---|---|---|---|
|
Product type |
100GBASE-CR4 QSFP passive copper cable |
100GBASE-CR4 QSFP passive copper cable |
100GBASE-CR4 QSFP passive copper cable |
100GBASE-CR4 QSFP passive copper cable |
|
Cable assembly type |
Direct-attach copper cable assembly |
Direct-attach copper cable assembly |
Direct-attach copper cable assembly |
Direct-attach copper cable assembly |
|
Interface role |
QSFP-to-QSFP 100G cable |
QSFP-to-QSFP 100G cable |
QSFP-to-QSFP 100G cable |
QSFP-to-QSFP 100G cable |
|
Supported Ethernet rate |
100 Gigabit Ethernet |
100 Gigabit Ethernet |
100 Gigabit Ethernet |
100 Gigabit Ethernet |
|
Cable length |
3 meters |
1 meter |
2 meters |
5 meters |
|
Power consumption |
1.5W per end |
1.5W per end |
1.5W per end |
1.5W per end |
|
Pull tab color |
Orange |
Beige |
Brown |
Gray |
|
Cable diameter |
7 mm |
7 mm |
7 mm |
9 mm |
|
Bend radius |
50 mm |
50 mm |
50 mm |
70 mm |
- QSFP-100G-CU3M is the 3-meter choice in Cisco’s QSFP-100G passive copper cable family, sitting between the shorter 1-meter and 2-meter cables and the thicker 5-meter cable.
- For rack routing, the 3-meter cable keeps the same 7 mm diameter and 50 mm bend-radius values as the 1-meter and 2-meter versions in Cisco’s 100G cable specification table.
- Do not substitute a QSFP-4SFP25G-CU cable when the design needs a straight QSFP-to-QSFP 100G link; that is a different breakout cable family.
- Ask for order line, order, support entitlement support, and deployment by exact SKU because similar Cisco QSFP-100G cable names differ mainly by length and can be mixed up in a bill of materials. Related SKU checks: QSFP-100G-CU2M, QSFP-100G-CU5M. Related comparison SKUs: QSFP-100G-CU1M.
Selection Guide
1. Choose it for a measured 3-meter 100G copper path
Use QSFP-100G-CU3M when the installed route between two Cisco QSFP-100G ports fits a 3-meter cable with service slack and without violating the documented 50 mm bend radius.
2. Avoid using it as a breakout replacement
This SKU is a QSFP-to-QSFP direct-attach cable. If the requirement is one 100G port to four 25G endpoints, review Cisco’s QSFP-4SFP25G-CU cable family instead of changing only the length.
3. Check copper-cable clearance before shipment
The 3-meter copper cable is thicker than Cisco’s active optical cable options. Confirm front clearance, cable dressing, and airflow impact in dense racks before approving a copper-only bill of materials.
4. Validate host support before purchase
Use Cisco compatibility documentation to confirm the network device product ID, line card or module, port type, and software release. The cable family is Cisco-listed, but platform support still depends on the exact device and release combination.
Ordering Checklist
|
Check Item |
What to Confirm |
Why It Matters |
|---|---|---|
|
Exact Product ID |
QSFP-100G-CU3M |
Prevents substitution with 1-meter, 2-meter, 5-meter, active optical, or breakout cable SKUs |
|
Cable length |
3-meter route with service slack |
Keeps the installed link within the purchased fixed cable length |
|
Interface role |
QSFP-to-QSFP 100G direct-attach connection |
Avoids ordering this SKU for a 100G-to-25G breakout requirement |
|
Host compatibility |
Cisco switch, router, module, port type, and software release |
Confirms the cable is supported in the intended hardware |
|
Physical routing |
7 mm cable diameter and 50 mm bend radius |
Reduces installation issues in high-density front-panel cable paths |
Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Product ID | QSFP-100G-CU3M | Product type | 100GBASE-CR4 QSFP passive copper cable |
| Ordering description | Cisco 100GBASE-CR4 QSFP Passive Copper Cable, 3-meter | Cable assembly type | Direct-attach copper cable assembly |
| Interface role | QSFP-to-QSFP 100G direct-attach cable | Supported Ethernet rate | 100 Gigabit Ethernet |
| Cable length | 3 meters | Power consumption | 1.5W per end |
| Pull tab color | Orange | Cable diameter | 7 mm |
| Bend radius | 50 mm | QSFP connector module dimensions | 13.5 x 18.4 x 72.4 mm maximum outer dimensions |
| QSFP connector module weight | 100 grams or less | Commercial operating temperature | 0 to 70 degrees C |
| Storage temperature range | -40 to +85 degrees C | Standards references | SFF-8665, SFF-8636, IEEE 802.3-2022, IEEE 802.3ba, IEEE 802.3bm |
| Compliance reference | RoHS 6 | Copper cable jacket safety | UL E116441 compliant |
| Copper cable electrical safety | ELV compliant | Standard warranty | 5 years |
Get More Information
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