Cables & Interconnects Guide

How to choose between DAC, AOC, AEC and breakout cables from 10G to 800G: reach and power tradeoffs, form factors (SFP28, QSFP28, QSFP-DD, OSFP), vendor coding, and what to check when a cable won't link.

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1Start hereWhat Cable Do I Need? The Complete Guide to GPU Cluster Interconnects in 2026 What Cable Do I Need? The Complete Guide to GPU Cluster Interconnects in 2026 Building a GPU cluster is mostly a hardware procurement problem — until you hit... Read the guide → 2Pick a cable typeDAC vs AOC vs AEC: Which Cable Goes Where in an AI Rack? (2026 Buyer's Guide) DAC, AOC, or AEC — confused which interconnect fits your AI cluster? A clear, practical breakdown by distance, power, and rack position, with compatible cable options. Read the guide → 3Form factor vs. cableOSFP vs DAC vs AOC: You're Comparing Two Different Things OSFP is the connector. DAC and AOC are two of four things that go between connectors. The three decisions you actually have to make, the reach limits that... Read the guide → 4No link?DAC Cable No Link? Fix 25G/100G FEC Mismatches (2026 Guide) Why won't your 25G or 100G DAC cable link up? It's usually a FEC mismatch, not a bad cable. Here's how to diagnose and fix it across Cisco,... Read the guide →

Popular cables

Best-selling DAC, AOC and breakout cables from 10G to 800G. Need a different length or vendor coding? Ask us.

Cisco SFP-H10GB-CU1M 10G SFP+ direct-attach cable, 1m, new Cisco SFP-H10GB-CU1M 10GBASE-CU SFP+ Direct-Attach Cable, New $82.00In stock Cisco SFP-H25G-CU2M 25GBASE-CR1 SFP28 Passive DAC Cable — 2m, New Cisco SFP-H25G-CU2M 25GBASE-CR1 SFP28 Passive DAC Cable — 2m, New $215.00In stock SFP-25G-AOC10M Cisco Compatible, 25GbE SFP28 Active Optical Cable - 10m SFP-25G-AOC10M Cisco Compatible, 25GbE SFP28 Active Optical Cable - 10m $59.00In stock QSFP-100G-AOC3M Cisco Compatible, 100G QSFP28 Active Optical Cable - 3m QSFP-100G-AOC3M Cisco Compatible, 100G QSFP28 Active Optical Cable - 3m $140.00In stock AOC-Q-Q-100G-3M Arista Compatible, 100G QSFP28 Active Optical Cable - 3m AOC-Q-Q-100G-3M Arista Compatible, 100G QSFP28 Active Optical Cable - 3m $140.00In stock JNP-100G-AOC-3M Juniper Compatible, 100G QSFP28 Active Optical Cable - 3m JNP-100G-AOC-3M Juniper Compatible, 100G QSFP28 Active Optical Cable - 3m $140.00In stock MCP1650-V00AE30 200G QSFP56 passive DAC cable, 0.5m, for NVIDIA DGX Spark MCP1650-V00AE30 QSFP/CX7 Cable — 200G QSFP56 Passive DAC, 0.5m – NVIDIA DGX Spark Compa... $84.00In stock MCP7H60 400G QSFP-DD to 2x200G QSFP56 passive breakout DAC cable MCP7H60-W002 NVIDIA/Mellanox Compatible, 400G QSFP-DD to 2x200G QSFP56 Passive Breakout... $179.45In stock 400G passive DAC cable MCP4Y10-N001 800G Twin-Port OSFP Passive DAC Cable, 1m, Finned Top – Quantum-2 Switch-t... $195.00In stock MFA7U10-H003 NVIDIA/Mellanox Compatible 400G OSFP to 2x200G QSFP56 Active Optical Breakout Cable - 3m MFA7U10-H003 NVIDIA/Mellanox Compatible 400G OSFP to 2x200G QSFP56 Active Optical Break... $1,345.45In stock MCP7Y00-N002 NVIDIA/Mellanox Compatible 800Gb/s OSFP to 2x400Gb/s OSFP Passive Breakout DAC Cable - 2m MCP7Y00-N002 NVIDIA/Mellanox Compatible 800Gb/s OSFP to 2x400Gb/s OSFP Passive Breakout... $298.45In stock MCP7Y50-N001 800G OSFP to 4x200G OSFP passive breakout DAC cable, 1m MCP7Y50-N001 Compatible 800G OSFP to 4x200G OSFP Breakout DAC Cable - 1M | NVIDIA / Mel... $384.00In stock

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