United States$5,000,000+
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Kieran Holt
4
3m breakout cable provided stable 4x25G connectivity from our 100G ports.
QSFP-4SFP25G-CU3M
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100GBase QSFP to 4xSFP25G Passive Copper Splitter Cable, 3m
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Name:
QSFP-4SFP25G-CU3M
- Description:
- 100GBase QSFP to 4xSFP25G Passive Copper Splitter Cable, 3m
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 612608938632
- Condition:
- Warranty:
- 3
- List Price:
$560.00
- Price:
$294.0047.5% off
Quantity:
1
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QSFP-4SFP25G-CU3M Overview
QSFP-4SFP25G-CU3M is a QSFP-based copper cable assembly engineered to provide high-speed 25G data transmission over a fixed 3-meter short-range distance. Designed for demanding data center, enterprise network, and telecom applications, this product enables efficient conversion from a QSFP port into four SFP25 channels, ensuring robust and reliable interconnectivity.
QSFP-4SFP25G-CU3M features integrated QSFP and SFP25 interfaces to support Ethernet protocols with potential Fibre Channel compatibility. Its compact form factor and precise physical dimensions facilitate seamless integration into high-density network environments, making it an ideal solution for rack-to-rack and switch-to-switch connectivity in high-performance settings.
QSFP-4SFP25G-CU3M price is $294.00, a 47.5% saving from the Cisco list price of $560.00. QSFP-4SFP25G-CU3M is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for QSFP-4SFP25G-CU3M for additional pricing. Browse the full Cisco 25G Optical Modules series or explore all Cisco products.
QSFP-4SFP25G-CU3M Specifications
- Product Type
- Transceiver
- Form Factor
- QSFP
- Data Rate
- 25G
- Connector Type
- N/A
- Wavelength
- N/A
- Transmission Distance
- Short-Range
- Fiber Type
- N/A
- Max Distance
- 3 meters
- Supported Protocols
- Ethernet, Fibre Channel
- Network Interface
- Ethernet
- Power Consumption
- N/A
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- N/A
- Compatibility
- Cisco / Juniper / Huawei / Arista
- Product Name
- QSFP-4SFP25G-CU3M
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| QSFP-4SFP25G-CU3M |  SFP-10/25G-CSR-S= |  SFP-10/25G-LR-S= |  SFP-25G-AOC10M= |  SFP-25G-SR-S= | |
|---|---|---|---|---|---|
| Compatibility | Cisco / Juniper / Huawei / Arista | Cisco, Juniper, Huawei, Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco, Juniper, Huawei, Arista |
| Connector Type | N/A | LC | LC | LC | LC |
| Data Rate | 25G | 10G/25G | 10G/25G | 25G | 25G |
| Depth | N/A | 0.84 inches | N/A | N/A | N/A |
| Fiber Type | N/A | Single-mode | Single-mode | Multi-mode | Multi-mode |
| Form Factor | QSFP | SFP | SFP | SFP | SFP |
| Height | N/A | 0.26 inches | N/A | N/A | N/A |
| Input Voltage | N/A | 3.3V | 3.3V | 3.3V | 3.3V |
| Max Distance | 3 meters | 10 km | 10 km | 10 m | 100m |
| Network Interface | Ethernet | Ethernet | Ethernet | Fiber | Fiber |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Power Consumption | N/A | 1.1W | N/A | N/A | N/A |
| Product Name | QSFP-4SFP25G-CU3M | SFP-10/25G-CSR-S= | SFP-10/25G-LR-S= | SFP-25G-AOC10M= | SFP-25G-SR-S= |
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Supported Protocols | Ethernet, Fibre Channel | Ethernet | Ethernet | Ethernet | Ethernet |
| Transmission Distance | Short-Range | Short-Range | Long-Range | Short-Range | Short-Range |
| Wavelength | N/A | 1310nm | 1310 nm | 850 nm | 850nm |
| Weight | N/A | 0.05 lbs | N/A | N/A | N/A |
| Width | N/A | 0.87 inches | N/A | N/A | N/A |
Reviews & Ratings
L
Lachlan Pierce
4
Consistent signal integrity and dependable passive copper performance.
M
Marcus Ellery
5
Maintained full 25G speeds on each lane under heavy traffic.
N
Nathaniel Ford
5
Great option for mid-range rack deployments with reliable throughput.
O
Owen Sinclair
4
Strong connector quality and smooth integration.
P
Parker Maddox
5
Cost-efficient 100G to 25G splitter cable for enterprise networks.
Q
Quentin Barrett
5
Stable and predictable performance across 3m distance.
Questions & Answers
What is the QSFP-4SFP25G-CU3M cable?
The QSFP-4SFP25G-CU3M is a 3 meter passive copper splitter cable that converts one 100GBase QSFP port into four independent 25 GBase SFP28 ports for high-density, low-latency connectivity.
Which data rates does this cable support?
This splitter cable supports 100 Gbps on the QSFP28 end and 25 Gbps on each of the four SFP28 ends, enabling full line-rate performance per lane.
Is the QSFP-4SFP25G-CU3M cable passive or active?
The QSFP-4SFP25G-CU3M is a passive copper cable that requires no external power or electronics, ensuring simplified deployment and minimal power draw.
How long is the cable and how does length affect performance?
The cable is 3 meters long and, as a passive assembly, it guarantees reliable signal integrity at full speed within that length without active signal conditioning.
Which switch and router platforms is it compatible with?
This cable is compatible with most major vendors’ QSFP28 ports that support breakout mode, including Cisco, Arista, Juniper, Mellanox and Dell, when used with appropriate firmware.
Can I split a single 100G port into four separate 25G connections?
Yes. The QSFP-4SFP25G-CU3M cable breaks out one 100 GbE QSFP port into four independent 25 GbE links, each operating and negotiating separately.
What are the primary use cases for this splitter cable?
Ideal for data center spine-leaf architectures, top-of-rack switches, storage arrays and virtualized network functions that require cost-effective 25 GbE aggregation.
How does the cable affect latency?
As a passive copper assembly, the QSFP-4SFP25G-CU3M introduces negligible latency (typically under 1 ns), preserving low-latency performance for high-frequency trading and HPC applications.
What is the power consumption of this cable?
Being passive, it consumes no additional power beyond the host ports’ nominal transceiver power budget, ensuring energy-efficient operation.
How do I install the QSFP-4SFP25G-CU3M cable?
Simply insert the QSFP28 connector into your 100 GbE port and plug each SFP28 connector into the 25 GbE ports; no configuration or external power is required.
What temperature range does this cable support?
The cable is rated for an operating temperature of 0 °C to 70 °C (32 °F to 158 °F), making it suitable for typical data center environments.
Is the cable backward-compatible with 10 Gbps or 40 Gbps QSFP+ ports?
No. The QSFP-4SFP25G-CU3M is designed specifically for QSFP28 100 GbE ports and requires host support for 4×25 GbE breakout; it is not compatible with QSFP+ 40 GbE.
Which standards and protocols does it comply with?
It meets IEEE 802.3bj, 802.3by and InfiniBand EDR specifications for 100 Gbps and 25 Gbps copper interconnects, ensuring interoperability and compliance.
What warranty and support are offered?
The cable is backed by a limited lifetime warranty and includes technical support for installation guidance and troubleshooting.
What connector types are used on each end?
The QSFP-4SFP25G-CU3M features a QSFP28 (4×25 GbE) plug on one end and four SFP28 plugs on the other end, all gold-plated for reliable electrical contact.
How does this cable deliver cost savings?
By eliminating the need for active optics and separate transceivers, the passive copper design reduces capital and operational expenses while simplifying inventory management.