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1m(3ft) Cisco QSFP-4SFP25G-CU1M Compatible 100G QSFP28 to 4 x 25G SFP28 Ethernet Passive Direct Attach Copper Breakout Cable
1m(3ft) Cisco QSFP-4SFP25G-CU1M Compatible 100G QSFP28 to 4 x 25G SFP28 Ethernet Passive Direct Attach Copper Breakout Cable
1m(3ft) Cisco QSFP-4SFP25G-CU1M Compatible 100G QSFP28 to 4 x 25G SFP28 Ethernet Passive Direct Attach Copper Breakout Cable
P/N: Q100-4S25-C1
US$35.00
6
Solds
6
Reviews
2
Questions
safeguard
4-Year Warranty
30-Day Returns
30-Day Exchange
（1000 In Stock）

Product Highlights

Max. Power Consumption 0.125W
Tested in Targeted Switches for Superior Performance
Minimum Bend Radius 60mm for Flexible Routing
Supports 100G to 4x 25G Ethernet Interoperability
Simplifies Patching and Offers Cost-effective Short Links
Hot Pluggable Cable Compliant with QSFP28/SFP28 MSA
Low Insertion Loss and Ultra-low Crosstalk
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Specifications
Q&A
Reviews
Resources
1m(3ft) Cisco QSFP-4SFP25G-CU1M Compatible 100G QSFP28 to 4 x 25G SFP28 Ethernet Passive Direct Attach Copper Breakout Cable
The 100G QSFP28 to 4x 25G SFP28 Direct Attach Cable utilizes passive copper technology, ensuring reliable connectivity without the need for additional power. This cable provides a cost-effective solution for interconnecting equipment within a close range, such as telecom operator equipment rooms or data centers. It offers a seamless connection between a 100G QSFP28 port and four 25G SFP28 ports, meeting the requirements of industry standards IEEE 802.3bj, SFF-8402, and SFF-8665.
Specifications
Part Number
QSFP-4SFP25G-CU1M
Vendor Name
AICPLIGHT
Form Factor
QSFP28 to SFP28
Max Data Rate
100Gbps
Minimum Bend Radius
60mm
Wire AWG
30AWG
Cable Length
1m (3ft)
Jacket Material
PVC (OFNR)
Cable Type
Passive Twinax
MTBF
≈50 Million Hours
Power Consumption
≤0.125W
Power Supply
3.3V
Commercial Temperature Range
0 to 70°C (32 to 158°F)
Protocols
IEEE 802.3,QSFP28 MSA, SFF-8665
Media
Copper
Application
100G to 2x 25G Ethernet, Data Centers
Certification
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Questions & Answers
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All (2) Compatibility (1)Installation (1)
Q:

How should cables be routed in a high-density rack?

by o***m on 2025-07-10 16:11:51

A:

Use cable managers to maintain airflow and prevent bending.

by Helpful on 2025-07-10 16:41:46

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comment icon Comment 0
Q:

Can these transceivers auto-negotiate with older models?

by s***m on 2025-07-10 15:07:55

A:

Yes, backward compatibility is supported in many cases.

by CPLIGHT on 2025-07-10 16:40:25

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Customer Reviews
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All (6) Performance (1)Compatibility (1)Ease of Use (3)Value (1)
r
r***m
2025-06-04 15:33:00
Confirmed Purchase
5.0

Used in our GPU training pod (8x H100s) to connect each server node. Latency remained sub-microsecond, even with large tensor workloads.

link icon Helpful 0
comment icon Comment 0
N
N***m
2025-05-17 19:07:39
Confirmed Purchase
5.0

Fully compatible with our NVIDIA ConnectX-6 NICs and Mellanox switches. No firmware warnings or handshake delays.

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comment icon Comment 0
f
f***m
2025-05-03 01:48:49
Confirmed Purchase
5.0

Pre-labeled and pre-tested AOCs made our rack wiring painless. They’re flexible enough for tight bends and clearly marked on each end.

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comment icon Comment 0
V
V***m
2025-04-21 13:46:21
Confirmed Purchase
5.0

Support walked us through breakout combinations and advised on lengths to minimize signal loss.

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W
W***m
2025-04-13 06:37:27
Confirmed Purchase
5.0

Plug-and-play experience was excellent. The cables came clean and ready for immediate deployment.

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D
D***m
2025-04-02 15:35:09
Confirmed Purchase
5.0

High-quality interconnects at a fraction of the price of branded cables. Ideal for scaling AI clusters on a budget.

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comment icon Comment 0
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