CISCO SFP-H25G-CU4M Dac Passive Twinax Cable 25GBASE-CU SFP28 37-1991-01

( Brand: Cisco ), ( Manufacturer Part Number: SFP-H25G-CU4M ), ( Part Type: Cable ), ( Network Ports: Sfp )

Review CISCO New 25gbase-cu Dac Passive Twinax Cable 37-1991-01

The Cisco SFP-H25G-CU4M 25GBASE-CU SFP28 DAC Passive Twinax Cable (Part Number: 37-1991-01) is a high-performance, short-reach interconnect solution designed for Cisco's 25 Gigabit Ethernet (25G Ethernet) platforms. This cable is ideal for connecting servers, switches, and other networking devices within a data center or similar environment where high-speed, low-latency connections are essential.

The Cisco SFP-H25G-CU4M DAC (Direct Attach Cable) is built using a passive twinax design, which eliminates the need for an external optics module. This simplifies the cabling infrastructure and reduces the cost and complexity of the interconnect solution. The cable's compact design also makes it easier to install and manage in dense racks and cabinets.

The 25GBASE-CU interface on the SFP28 transceiver module supports both 25G Ethernet and 100G Ethernet (4x25G) applications. This makes the cable a versatile and future-proof investment for networking environments that may adopt higher-speed technologies in the future.

The cable's twinax design features 28 AWG copper conductors, which provide excellent signal integrity and minimize signal loss. The cable also supports a maximum length of 15 meters (49.2 feet), ensuring reliable connectivity over short distances.

The Cisco SFP-H25G-CU4M 25GBASE-CU SFP28 DAC Passive Twinax Cable is built to the highest standards of quality and durability. It is RoHS compliant and features a rugged, flexible jacket that can withstand the rigors of a data center environment. The cable also includes a pull tab for easy identification and handling.

In summary, the Cisco SFP-H25G-CU4M 25GBASE-CU SFP28 DAC Passive Twinax Cable (37-1991-01) is a versatile, high-performance, and cost-effective interconnect solution for 25G Ethernet applications in data center environments. Its passive twinax design, short reach capability, and rugged construction make it an excellent choice for connecting servers, switches, and other networking devices.

Pros and Cons of Buying Cisco SFP-H25G-CU4M 25GBASE-Cu SFP28 DAC Passive Twinax Cable (37-1991-01)

The Cisco SFP-H25G-CU4M is a 25GBASE-Cu SFP28 transceiver module that supports passive twinax DAC (Direct Attach Copper) cables. This cable type (37-1991-01) is an essential component for establishing 25GbE connections. In this analysis, we will discuss the advantages and disadvantages of purchasing this Cisco transceiver module and the associated passive twinax DAC cable.

1. High-Speed Connectivity: The Cisco SFP-H25G-CU4M offers 25GbE connectivity, which is becoming increasingly popular for data center and enterprise applications.

2. Low Latency: The passive DAC cable design eliminates the need for an external converter, resulting in lower latency compared to active cables.

3. Cost-Effective: Passive DAC cables generally cost less than their active counterparts, making the overall solution more budget-friendly.

4. Improved Power Efficiency: As there's no need for a power source at the remote end, passive DAC cables are more power-efficient than active cables.

5. Easy to Install: Passive DAC cables are simple to install as they do not require any external power sources and can be easily connected to the transceiver module and the network device.

1. Limited Reach: Passive twinax DAC cables have a shorter maximum reach compared to active cables, which might limit their usage in larger data center environments.

2. Cable Cost: While the transceiver module itself is cost-effective, the cost of purchasing multiple passive DAC cables for longer runs can add up.

3. Limited Flexibility: Passive DAC cables have less flexibility in terms of cable length, as they are limited to the maximum cable length supported by the transceiver module.

4. Potential Signal Degradation: Longer passive DAC cable runs may experience signal degradation, which can affect the overall performance of the connection.

The Cisco SFP-H25G-CU4M 25GBASE-Cu SFP28 DAC passive twinax cable (37-1991-01) offers several advantages, such as high-speed connectivity, low latency, cost-effectiveness, and power efficiency. However, it also comes with some disadvantages, including limited reach, cable cost, and flexibility.

Based on the analysis, this solution is ideal for applications that require short cable runs, low latency, and cost-effective 25GbE connectivity. It is particularly suitable for data center environments where power efficiency and simplicity are key factors. However, for longer cable runs, higher flexibility, or environments with limited power budgets, active SFP28 cables might be a better choice.

If you're looking for a cost-effective, power-efficient, and simple 25GbE solution for short cable runs, the Cisco SFP-H25G-CU4M and its associated passive DAC cable (37-1991-01) should be considered. However, if longer cable runs, flexibility, or power constraints are factors, an active SFP28 transceiver module might be a more suitable option.

Details:

Condition is New. New Cisco SFP-H25G-CU4M 25GBASE-CU SFP28 DAC Passive Twinax Cable 37-1991-01. Shipped with USPS Ground Advantage.

part #: sfph25gcu4m prices

• $38.67-$185.77

specifications switchchunk:

• brand: Cisco
• mpn: Sfp-h25g-cu4m
• part type: Cable
• network ports: Sfp

returns switchchunk:

• method: Money back
• time: 30 Days
• policy: Returns Accepted
• paid by: Buyer

seller switchchunk:

• rating: 100.0%
• city: Redwood City, California
• # reviews: 2235

payments switchchunk:

• credit card: Discover
• wallet: Apple-pay
• other

shipping switchchunk:

• carrier: USPS
• service: USPS Ground Advantage
• class: Standard
• type: Calculated
• cost: $5.49
• transit: 2-4 Days

general switchchunk:

• Enterprise Networking, Servers > Switches Hubs > Switch Modules
• condition: New

offer switchchunk:

• started: June 3, 2025
• best offers: True
• sold: 0
• quantity: 4
• availability: In Stock
• options: Ship-to-home

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