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Guides & comparisons, written for engineers

No fluff. Distance, wavelength, compatibility and cost — answered directly with real data.

Aug 2026

SFP-10G-SR vs SFP-10G-LR: Which 10G Module Do You Need?

300m multimode or 10km single-mode? The distance and fiber type decide — here's the direct answer, with compatibility notes for Cisco, Juniper and Arista.

10G Transceivers
Coming soon

800G OSFP vs 400G QSFP-DD: AI Data Center Build Guide

Port density, power and cost per 100G — what to pick for your AI fabric, with real compatible-part data.

400G / 800G
Coming soon

DAC vs AOC: When to Use Which Cable Type

Passive copper vs active optical — reach, power, cost and reliability trade-offs for racks and rows.

DAC / AOC