The 25G SFP28 Active Optical Cable is suitable for short-distance, high-speed connections within a data center, such as within a rack, between racks. Compared with a solution using 25G optical modules with duplex fiber, an AOC integrates the module and cable into a single unit, eliminating the need to select fiber, offering better compatibility and stability, and simplifying deployment. It is ideal for dense rack layouts, reducing cable management complexity while lowering overall deployment costs. For longer distances or more flexible cabling, using separate 25G optical modules with fiber patch cords is recommended.

by FS.com on 12/20/2025

80' is a long haul for a DAC cable but it's active optical I would be confident it would work fine. And transceivers with optical cable will cost more.

by L***o on 04/10/2023

Hello, Mellanox ConnectX-4 NIC network card does not require high compatibility. If you want to be compatible with S5860-24XB-U switch and Mellanox ConnectX-4 NIC network card at the same time, it is recommended to choose Cisco compatible cable #68338.

by R***y on 07/24/2021

No, it can’t be used in the stack port of your device. FS DAC & AOC can only be used in the business port of the switch to achieve virtual stacking, but can not be used in the stack port to achieve physical stacking. The stacking through the stack port of device belongs to physical stacking which needs a specific stacking cable, and it is under development for now.

by E***n on 11/24/2020

There are two major advantages of 25G technology. First, by offering a single-lane 25Gbps variant, 25G allows for optimization of the bandwidth available from switch-fabric design, which is typically viewed from a per-pin and therefore per-lane standpoint. And the other major advantage is it takes existing module form factors and optical plants factors, such as SFP28 and QSFP28, and allows for a breakout connection that is configurable as either 25G per lane or the full 100G without changing the port on the front of switches and the wholes physical infrastructure.

by J***z on 07/18/2018