As we know, ETU-Link supply 25G SFP28 Transceiver, and 25G SFP28 DAC Cable.

How to choose the best solution in a 25G Cabling solution system？

Let's go ahead.

Solution 1: 25G SFP28 Transceiver + Patch cord

ETU-Link mainly supply 2 types of 25G SFP28 Transceivers.

25GBase-SR: ETU PN.ESP852A-3LCD03:

http://www.etulinktechnology.com/uploadfile/attachment/ab1df48319ff81bb6ea64189f5b168e2.pdf.

25GBase-LR: ETU PN.ESP312A-3LCD10:

http://www.etulinktechnology.com/uploadfile/attachment/c6b12a1f04dd5f5fc630e0aed1908cb3.pdf

Pros: If the distance between 2 datacenters is long, using "25G SFP28 Transceiver + Patch cord" is the best choise.

Cons: It will be more expensive compare with the other solutions.

Solution 2: SFP28 DAC Cable

SFP28 DAC Cable: it is terminated with two SFP28 connectors at both ends, the SFP28 connector is also not real transceiver module,

which doesn’t have expensive optical lasers.

25G SFP28 DAC Cable: ETU PN.:EQSPDC2A-330Cxx: http://www.etulinktechnology.com/uploadfile/attachment/4e4a55ed0ce1efc47e74e89928a0833a.pdf

Pros: It is very suitable for very short links and offer a highly cost-effective way to establish a 25-Gigabit link between SFP28 ports of switches.

Cons: Transmission distance is usually less than 10 meters.

You can choose the right solution according to your demands.

Welcome to contact me to know the prices or other details.