400G QSFP-DD Direct Attach Copper Cable 30AWG Passive 5M

The 400G QSFP-DD Direct Attach Copper Cable is a 5-meter, 30AWG passive solution for high-speed, short-reach interconnects. It provides low-latency, reliable 400G connectivity with compact, plug-and-play installation, and OEM/ODM customization is available.

SKU DAC-400GQSFP-P5 Category
Share this product with

The 400G QSFP-DD Direct Attach Copper (DAC) Cable is designed for ultra-high-speed, short-reach interconnects in data centers, high-performance computing clusters, and enterprise networks. With a 5-meter length and 30AWG copper construction, this passive DAC cable provides reliable 400G connectivity between QSFP-DD ports, delivering low-latency and high-bandwidth performance.

As a passive plug-and-play solution, the cable requires no external power or configuration, offering immediate deployment and stable performance. Its compact design reduces cable bulk, improves airflow, and helps maintain an organized rack environment, making it ideal for high-density networking applications.

Engineered for short-reach 400G links, this cable ensures low insertion loss and stable signal transmission, providing a cost-effective alternative to optical transceivers for short distances. FiberMania also offers OEM/ODM customization, including custom lengths, labeling, and packaging to meet specific deployment requirements.

Featured DAC & AOC Cable Solutions

SKU Cable Type Data Rate Form Factor A Form Factor B Wire Type Length
AOC-100GQSFP28-5 AOC 100G QSFP28 QSFP28 OM4 Fiber Cable 5M
AOC-10GSFP-10 AOC 10G SFP+ SFP+ OM4 Fiber Cable 10M
AOC-25GSFP28-3 AOC 25G SFP28 SFP28 OM4 Fiber Cable 3M
AOC-40GQSFP-10 AOC 40G QSFP+ QSFP+ OM3 Fiber Cable 10M
AOC-QSFP-10G4SFP-5 AOC 40G QSFP+ 4*SFP+ OM3 Fiber Cable 5M
AOC-QSFP28-4SFP28-3 AOC 100G QSFP28 4×SFP28 OM3 Fiber Cable 3M
DAC-100GQSFP28-25G4SFP28-P5 DAC 100G QSFP28 4×SFP28 24AWG 5M
DAC-100GQSFP28-P3 DAC 100G QSFP28 QSFP28 26AWG 3M
DAC-10GCX4-P05 DAC 10G CX4 CX4 28AWG 3M
DAC-10GSFP-P10 DAC 10G SFP+ SFP+ 24AWG 10M
DAC-10GSFP-XFP-A10 DAC 10G SFP+ XFP 24AWG 10M
DAC-400GQSFP-P5 DAC 400G QSFP-DD QSFP-DD 30AWG 5M
DAC-40GQSFP-P07 DAC 40G QSFP+ QSFP+ 28AWG 7M
DAC-QSFP-10G4SFP-P03 DAC 40G QSFP+ 4 * SFP+ 30AWG 3M
DAC-SFP-P05 DAC 1.25G SFP SFP 30AWG 5M

Connector AQSFP-DD
Connector BQSFP-DD
Cable TypePassive DAC
Data Rate400Gbps (8×50G PAM4)
Length5 meters
Wire Gauge30AWG copper
Power Consumption0W (passive)
StandardsQSFP-DD MSA | SFF-8636 | IEEE 802.3cd/bs
ApplicationsToR | switch-to-server | short-reach interconnects
  • 400G QSFP-DD passive DAC cable

  • 30AWG copper construction for reliable high-speed transmission

  • 5-meter length for short-reach interconnects

  • Plug-and-play, no external power required

  • Low-latency, energy-efficient performance

  • Compact and flexible for improved airflow and organized cabling

  • Data center switch-to-switch or server interconnects

  • High-performance computing clusters

  • Enterprise network backbone links

  • Short-reach 400G interconnects in racks and cabinets

  • Storage area networks (SANs) and high-speed network aggregation

  • Telecom and enterprise network environments

Customize DAC & AOC High-Speed Cable Solution

Cable Type Passive DAC / Active DAC (ACC) / Active Optical Cable (AOC)
Form Factor SFP+ / SFP28 / QSFP+ / QSFP28 / QSFP56 / QSFP-DD / OSFP
Data Rate 10G / 25G / 40G / 50G / 100G / 200G / 400G / 800G
Cable Length 0.5m–15m (DAC) / 1m–100m (AOC)
Transmission Medium Twinax Copper / Multimode Optical Fiber
Connector Compatibility Cisco / NVIDIA / Arista / Juniper / Dell / HPE / Generic Compatible
Jacket Type PVC / LSZH
EEPROM Coding OEM Compatible Programming Available
Operating Temperature Commercial / Industrial Grade

Q1: What is the supported data rate of this cable?
A: It supports 400G transmission between QSFP-DD ports.

Q2: Does this cable require external power?
A: No, as a passive DAC cable, it is plug-and-play and requires no external power.

Q3: What is the cable length?
A: This model comes in a 5-meter length. Custom lengths are available via OEM/ODM services.

Q4: What is 30AWG?
A: 30AWG refers to the wire gauge, indicating a thin, flexible copper conductor suitable for short-reach high-speed links.

Q5: Can it be used for long-distance connections?
A: Passive DAC cables are intended for short-reach applications; longer distances require active DAC or optical transceivers.

Q6: Is customization available?
A: Yes, FiberMania supports OEM/ODM customization including cable length, labeling, packaging, and branding.