Arista AOC-S-S-25G-25M | 25G SFP28 Active Optical Cable, 25m, Multi-Mode, 850nm

Q: What is the maximum distance supported by the AOC-S-S-25G-25M?
A: The AOC-S-S-25G-25M supports distances up to 25 metres (82 ft) over multi-mode fibre, making it well-suited for intra-rack and inter-rack connections within a data centre.

Q: Is this cable compatible with non-Arista switching equipment?
A: Yes. The AOC-S-S-25G-25M is compliant with the SFP28 MSA (SFF-8432) standard, which means it is designed to be interoperable with any equipment that supports SFP28 25G ports — including switches and servers from other major vendors.

Q: What fibre type does this AOC require?
A: This cable uses 850nm VCSEL optical technology and is designed for multi-mode fibre (MMF). No separate fibre patch cable is required — the AOC integrates the fibre and transceiver electronics into a single assembly.

Q: How does an Active Optical Cable differ from a Direct Attach Copper (DAC) cable?
A: An AOC uses optical fibre internally with integrated transceiver electronics at each end, offering lighter weight, lower EMI, and support for longer distances compared to DAC cables. DAC cables are typically limited to 5–7 metres for 25G, whereas this AOC extends connectivity to 25 metres.

Q: Can I purchase the Arista AOC-S-S-25G-25M in Australia from IP Trading?
A: Yes. IP Trading (iptrading.com.au) is an Australian B2B IT hardware specialist and stocks Arista transceivers and AOC cables. Contact the team for pricing, availability, and volume orders.

Q: What data centre architectures is this AOC suited for?
A: The AOC-S-S-25G-25M is ideal for Spine-Leaf architectures, top-of-rack server connections, and high-density data centre environments where 25G bandwidth and low latency are critical. It is commonly used for server-to-switch and switch-to-switch links within a data centre floor.