QSFP-4SFP10G-CU1M – 40G QSFP+ Breakout – 4x10G SFP+ DAC – 1m Length
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QSFP-4SFP10G-CU1M Description
QSFP-4SFP10G-CU1M is a Cisco 40GBASE-CR4 QSFP to four 10GBASE-CU SFP+ passive direct-attach breakout cable for short in-rack or adjacent-rack links between a Cisco 40G QSFP or QSFP+ switch port and four 10G SFP+ switch ports. This 1 m cable maps one QSFP/QSFP+ end to four SFP+ ends, uses a passive copper cable assembly, supports 40G-to-4x10G breakout connectivity, has a 0.33 m breakout location from the 40G end, and uses a 30 AWG QSFP-end cable with a 7 mm QSFP-end diameter and 5 mm SFP-end diameter for compact rack cabling.
Quick Specs
|
Parameter |
Specification |
|---|---|
|
Product ID |
QSFP-4SFP10G-CU1M |
|
Product type |
QSFP to four SFP+ copper breakout cable |
|
Ethernet application |
40GBASE-CR4 to four 10GBASE-CU links |
|
Cable operation |
Passive direct-attach copper cable assembly |
|
Port mapping |
One 40G QSFP/QSFP+ end to four 10G SFP+ ends |
|
Cable length |
1 meter |
|
Breakout location from 40G end |
0.33 meters |
|
QSFP-end cable gauge |
30 AWG |
|
QSFP-end cable diameter |
7 mm |
|
SFP-end cable diameter |
5 mm |
|
Minimum bend radius |
50 mm at QSFP end; 45 mm at SFP ends |
|
Jacket material |
PVC |
|
Operating temperature range |
0 to 70 degrees C |
Application Scenarios
Use QSFP-4SFP10G-CU1M when one Cisco 40G QSFP/QSFP+ port needs to break out into four 10G SFP+ connections and the endpoints are close enough for a 1 meter passive copper cable.
Select this SKU for top-of-rack or same-cabinet cabling where passive copper is preferred over optics and fiber for a short, fixed-length connection between QSFP and SFP+ ports.
Keep this 1 meter cable separate from the 0.5 meter, 3 meter, and 5 meter Cisco breakout cable PIDs during procurement, because the different lengths also change the documented breakout location from the 40G end.
Product Comparison
|
Parameter |
QSFP-4SFP10G-CU1M |
QSFP-4SFP10-CU0-5 |
QSFP-4SFP10G-CU3M |
QSFP-4SFP10G-CU5M |
|---|---|---|---|---|
|
Product type |
QSFP to four SFP+ copper breakout cable |
QSFP to four SFP+ copper breakout cable |
QSFP to four SFP+ copper breakout cable |
QSFP to four SFP+ copper breakout cable |
|
Cable operation |
Passive direct-attach copper |
Passive direct-attach copper |
Passive direct-attach copper |
Passive direct-attach copper |
|
Cable length |
1 meter |
0.5 meters |
3 meters |
5 meters |
|
Breakout location from 40G end |
0.33 meters |
0 meters |
1 meter |
2 meters |
|
QSFP-end cable gauge |
30 AWG |
30 AWG |
30 AWG |
26 AWG |
|
QSFP-end cable diameter |
7 mm |
7 mm |
7 mm |
9 mm |
|
QSFP-end bend radius |
50 mm |
50 mm |
50 mm |
50 mm |
|
SFP-end cable diameter |
5 mm |
5 mm |
5 mm |
5 mm |
|
SFP-end bend radius |
45 mm |
45 mm |
45 mm |
45 mm |
|
Jacket material |
PVC |
PVC |
PVC |
PVC |
|
Jacket color |
Black |
Black |
Black |
Black |
- QSFP-4SFP10G-CU1M is the 1 meter member of Cisco’s passive QSFP-to-4xSFP+ copper breakout cable family.
- The 0.5 meter cable places the breakout at the 40G end, while the 1 meter cable moves the breakout point to 0.33 meters from the 40G side.
- The 5 meter cable uses a larger 26 AWG QSFP-side cable and 9 mm QSFP-side diameter, so cable trays and bend space should be checked before choosing it over the 1 meter version.
- Review QSFP-4SFP10G-CU3M, QSFP-4SFP10G-CU5M alongside QSFP-4SFP10G-CU1M for the adjacent technical comparison points. Related comparison SKUs: QSFP-4SFP10-CU0-5.
Selection Guide
1. Confirm Cisco host support before quoting
Check the Cisco Optics-to-Device Compatibility Matrix for the exact switch, line card, or module that will use the QSFP side and the four SFP+ ends. Do not approve the cable from length alone.
2. Use this SKU for short passive copper breakout
Choose QSFP-4SFP10G-CU1M when the design calls for a 1 meter passive copper path from one 40G QSFP/QSFP+ port to four 10G SFP+ ports. For longer runs, compare the documented 3 meter and 5 meter PIDs instead.
3. Check port-mode configuration on the 40G side
Breakout cabling normally requires the host platform to support 4x10G breakout mode on the QSFP port. Confirm the intended port mode before finalizing the bill of materials.
4. Match the breakout point to cable management
The 0.33 meter breakout location affects how early the four SFP+ legs separate from the QSFP trunk. Confirm rack layout, latch access, bend radius, and patch-panel spacing before ordering.
Ordering Checklist
|
Check Item |
What to Confirm |
Why It Matters |
|---|---|---|
|
Exact Product ID |
QSFP-4SFP10G-CU1M |
Separates the 1 meter cable from 0.5 meter, 3 meter, and 5 meter variants |
|
Cisco compatibility |
Target switch, module, or line card support in Cisco compatibility documentation |
Prevents ordering a cable that the host platform does not support |
|
Breakout configuration |
QSFP port supports 4x10G breakout mode |
The cable only solves the physical breakout; the port still needs the correct operating mode |
|
Physical route |
1 meter total cable length and 0.33 meter breakout point |
Confirms the cable reaches the four SFP+ endpoints without excess bend stress |
|
Endpoint plan |
One QSFP/QSFP+ port and four SFP+ ports available |
Avoids mismatched port counts during installation |
Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Product ID | QSFP-4SFP10G-CU1M | Product type | QSFP to four SFP+ copper breakout cable |
| Ethernet application | 40GBASE-CR4 to four 10GBASE-CU links | Cable operation | Passive direct-attach copper cable assembly |
| Port mapping | One 40G QSFP/QSFP+ end to four 10G SFP+ ends | Cable length | 1 meter |
| Breakout location from 40G end | 0.33 meters | QSFP-end cable gauge | 30 AWG |
| QSFP-end cable diameter | 7 mm | QSFP-end bend radius | 50 mm |
| QSFP-end face plate distance | 100 mm | SFP-end cable diameter | 5 mm |
| SFP-end bend radius | 45 mm | SFP-end face plate distance | 70 mm |
| Jacket material | PVC | Jacket color | Black |
| Pull-tab color | Beige | Operating temperature range | 0 to 70 degrees C |
| Storage temperature range | -40 to 85 degrees C | QSFP connector module dimensions | 13.5 x 18.4 x 72.4 mm, H x W x D |
| QSFP connector module typical weight | 100 g or less | Form-factor interface | SFF 8436 and QSFP MSA |
| Electrical interface reference | IEEE 802.3ba |
Get More Information
Need pricing, stock, or shipping details for the QSFP-4SFP10G-CU1M ? Layer23-Switch can help you check current availability, lead time, and delivery options for this. Send us the part number, quantity, and destination country via live chat or email sales@layer23-switch.com for a fast quotation.
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