AOC & DAC Cables • 1.25G → 800G • SFP+ / QSFP28 / QSFP-DD / OSFP • Data Center & AI

AOC & DAC Cables from 1.25G to 800G — Multi-Vendor Compatible Direct Attach & Active Optical Cables

Are you connecting switches, servers, or GPUs over short distances at high speeds and debating between copper and fiber? A DAC (Direct Attach Copper) is less expensive and consumes less power over a few meters; an AOC (Active Optical Cable) has a longer reach, is lighter, and is less susceptible to interference. Our 1.25G to 800G cables (SFP+, SFP28, QSFP+, QSFP28, QSFP56, QSFP-DD, OSFP) are certified and compatible with Cisco, NVIDIA/Mellanox, Arista, and Juniper —in stock in France.

View cables Compatibility table
Passive copper DAC ≤ 7 m Active optical AOC ≤ 100 m Breakout 1×100G → 4×25G 800G OSFP AI / HPC
✓ In stock in France — 24-hour shipping ✓ Compatible with Cisco / NVIDIA-Mellanox / Arista ✓ EEPROM coding tested individually ✓ 5-year warranty
Câble DAC Twinax QSFP28 100G ELFCAM — Direct Attach Copper compatible Cisco NVIDIA Mellanox
From 10G SFP+ DACs to 800G OSFP cables: the right short-distance connection for every port and every budget.
Table of Contents
Choose Categories Key Features Compatibility FAQ

Choose Your Solution in 30 Seconds

Just two questions: copper (DAC) or optical (AOC)? And what distance do you need to cover?

1) Your choice: DAC or AOC?

DAC — passive copper
  • The most affordable option, no power required
  • Zero latency, ideal for intra-rack use
  • Range: 1 to 7 m, stiffer cable
View DACs
AOC — active optical
  • Reaches up to 100 m, slim and lightweight
  • Immune to EMI interference
  • Ideal for inter-rack connections and long runs
View AOCs

2) Your port format

SFP+ / SFP28

10G & 25G — servers, NAS, access switches.

QSFP+ / QSFP28

40G & 100G — uplinks & spine-leaf.

QSFP-DD / OSFP

200G to 800G — AI & HPC clusters.

Decision Matrix (30 seconds)

  • Intra-rack link < 3 m, tight budget → DAC at port throughput
  • Inter-rack 5–100 m → AOC (slim, lightweight, EMI-free)
  • 1 100G port → 4 25G servers → QSFP28 breakout → 4×SFP28
  • NVIDIA 200/400G GPU cluster → QSFP56 / QSFP-DD DAC/AOC
  • Next-generation 800G spine → OSFP DAC (or 2×400G breakout)
  • 10G–25G NAS / home lab → SFP+ / SFP28 DAC

AOC & DAC Cables by Data Rate

From 1.25G access to 800G AI clusters: copper DACs and optical AOCs for every port format.

1.25G & 10G — access & short links (SFP / SFP+)

DAC and AOC cables in 1.25G SFP and 10G SFP+: servers, NAS, Freebox, and access switches over a few meters.

25G & 40G — Aggregation (SFP28 / QSFP+)

25G SFP28 and 40G QSFP+ links, including 40G → 4×SFP+ breakout to aggregate servers onto an uplink.

100G QSFP28 — spine-leaf & breakout

100G QSFP28 DAC & AOC cables, plus 100G → 4×25G SFP28 breakout to connect 4 servers to a single switch port.

200G · 400G · 800G — AI, HPC & NVIDIA

High-density QSFP56, QSFP-DD, and OSFP cables for GPU and InfiniBand clusters: compatible with NVIDIA/Mellanox, Cisco, and Arista, available in direct and breakout configurations.

Key Features — Field-Deployable DACs & AOCs

Why choose an integrated cable over a module + patch cable

  • Fewer losses & failures: no optical connectors to clean, zero dirty contact points.
  • Multi-vendor EEPROM programming: the port connects flawlessly to Cisco, NVIDIA/Mellanox, Arista, and Juniper.
  • Cost-effective: a DAC costs significantly less than a pair of modules plus a patch cable.
  • Unit-by-unit testing: Each cable is validated in a live connection before shipment.
Integrated cable—0 exposed connectors
Multi-brand EEPROM coding
Plug & Play—immediate port-up

One cable for each layer of the network

Câble DAC OSFP 800G Twinax ELFCAM — cluster IA HPC NVIDIA Mellanox

800G OSFP GPU & InfiniBand clusters.

Câble AOC QSFP56 200G optique actif ELFCAM — HPC compatible Cisco

200G/400G EMI-free HPC inter-rack AOCs.

Câble AOC QSFP28 100G OM3 ELFCAM — spine-leaf data centre

100G QSFP28 spine-leaf and 4×25G breakout.

Câble DAC SFP+ 10G Twinax ELFCAM — serveur NAS Freebox

10G SFP+ DAC for servers, NAS, and home labs.

  • Switch-to-switch and ToR-to-server connections within the rack
  • High-speed 1-port breakout → 4 servers
  • GPU / InfiniBand 200G–800G cabling

Recommended for

  • Data center architects & operators
  • AI / GPU / HPC clusters (NVIDIA)
  • 100/400G spine-leaf links
  • Server Rooms & Top-of-Rack
  • Home labs & 10G/25G NAS
  • Breakout aggregation
  • Storage Area Networks (SAN)
  • 10G → 100G → 800G Migration

Compatibility Table (Bandwidth, Type & Range)

Choose the right cable based on port format, type (DAC/AOC), and distance. (Scrollable table)

Data Rate Port Format DAC (copper) AOC (optical) Breakout Typical range
1.25GSFP✓✓—DAC ≤ 5 m · AOC ≤ 100 m
10GSFP+✓✓—DAC ≤ 7 m · AOC ≤ 100 m
25GSFP28✓✓—DAC ≤ 5 m · AOC ≤ 100 m
40GQSFP+✓✓4×10G (SFP+)DAC ≤ 5 m · AOC ≤ 100 m
100GQSFP28✓✓4×25G (SFP28)DAC ≤ 3 m · AOC ≤ 100 m
200GQSFP56✓✓2×100G / 4×50GDAC ≤ 3 m · AOC ≤ 30 m
400GQSFP-DD / OSFP✓✓2×200G / 4×100GDAC ≤ 2.5 m · AOC ≤ 30 m
800GOSFP✓—2×400G / 4×200GDAC ≤ 2 m

Compatibility verified: Cisco, NVIDIA/Mellanox, Arista, Juniper, HPE/Aruba, Dell, Intel. Coding tailored to your equipment available upon request.

FAQ — AOC & DAC Cables

Quick answers to the most frequently asked questions before you order.

1 What is the difference between a DAC cable and an AOC cable?
  • DAC (Direct Attach Copper): Twinax copper cable with integrated connectors; passive; the least expensive option, but limited to 1–7 m and stiffer.
  • AOC (Active Optical Cable): fiber-optic cable with integrated transceivers; thinner and lighter; supports lengths up to 100 m; immune to interference.
Within a rack, use DAC; between racks or along long cable runs, use AOC.
2 Passive or Active DAC: Which One to Choose?
The passive DAC (our main product line) is suitable for short distances (≤ 3–5 m depending on the data rate) and is the most economical option. The active DAC incorporates amplification electronics to extend the range slightly further. Beyond that, switch to AOC.
3 What is a breakout cable, and when should you use it?
A breakout cable splits a high-speed port into multiple links: for example, 1×100G QSFP28 → 4×25G SFP28, or 1×40G → 4×10G. This is ideal for connecting 4 servers to a single switch port and increasing rack density without adding more equipment.
4 Are your cables compatible with Cisco, NVIDIA/Mellanox, and Arista?
Yes. Our cables are EEPROM-coded to be recognized without error by Cisco, NVIDIA/Mellanox, Arista, Juniper, HPE/Aruba, and Dell. Several part numbers are direct equivalents of manufacturer codes (e.g., NVIDIA MCP/MFS/MFA). Please specify your hardware when ordering if you have any doubts.
5 What is the maximum distance for a DAC and an AOC?
For a passive DAC: approximately 5–7 m at 10G, and this decreases with higher data rates (~2–3 m at 400/800G). An AOC ranges from a few meters up to 100 m depending on the data rate. For longer distances, use separate modules and fiber patch cords.
6 OSFP, QSFP-DD, QSFP56: Which format is used for 200G–800G?
  • QSFP56: 200G (4×50G), AI aggregation networks.
  • QSFP-DD: 200G/400G, widely adopted in Ethernet.
  • OSFP: 400G/800G, the preferred format for NVIDIA InfiniBand clusters.
Check the physical port format of your switch or card before ordering.
7 Is an AOC/DAC cable repairable or reusable?
Since the connectors are integrated and sealed, an AOC/DAC cannot be repaired like a patch cable—it is a single unit. On the other hand, there are no connection points to clean, and reliability in a permanent connection is excellent. It remains reusable as long as it is not physically damaged.
8 What are the delivery times and warranty terms?
All our cables are in stock in France and shipped within 24 business hours, with a 5-year warranty and individual testing before shipment. For bulk orders, specific lengths, or manufacturer-specific coding, contact us for a quote.

Optical Modules

SFP+, QSFP+, and QSFP28 transceivers, or modules with patch cords if you prefer.

100G Networking

Installation guide for QSFP28, AOC, DAC, and MPO in data centers.

Fiber Patch Cables

LC/UPC, SC/APC, OS2, OM3/OM4 for long-distance connections.
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