Optical Transceiver
Products
Home

Direct Attach Cable

40G QSFP+ DAC

40G QSFP+ TO 4*SFP+ DAC Series

40G QSFP+ TO 4*SFP+ DAC Series

  • Product Model:

    EDQP4X-4SPx
  • Data Rate:

    40G
  • Product Origin:

    China
  • Shipping Port:

    Shenzhen

Breakout cable integrates one QSFP+ connector and four SFP+ connectors, splitting a single 40 Gbps port into four independent 10 Gbps channels, supporting passive and active transmission.

  • Product Detail

QSFP to 4x SFP+ Splitter Cable offers IT professionals a cost-effective interconnect solution for merging 40G QSFP and 10G SFP+ enabled host adapters, switches and servers. For typical applications, users can install this splitter cable between an available QSFP port on their 40Gigabit/s rated switch and feed up to four upstream 10GbE-SFP+ enabled switches. Each QSFP-SFP+ splitter cable features a single QSFP connector (SFF-8436) rated for 40-Gb/s on one end and (4) SFP+ connectors (SFF-8431), each rated for 10-Gb/s, on the other. 

QSFP to 4 SFP+ Splitter Cables designs and sources every subassembly in-house guaranteeing complete control over product performance, quality and consistency. Examples include our widely respected board-as-connector platform which is direct-welded to the wire and encased in a robust Zinc-Nickel back shell for superior crosstalk and EMI performance.





FAQ:


Q1: What is a ‌DAC Cable (Direct Attach Copper Cable)‌?‌

A1: A ‌high-speed DAC cable‌ is a cost-effective solution for ‌short-distance data transmission‌, commonly used in ‌data centers‌, ‌cloud computing‌, and ‌enterprise networking‌ to connect ‌switches, servers, and storage devices‌.

Q2: What are the advantages of using ‌DAC cables‌ over ‌optical transceivers‌?‌
A2: Passive DAC cables‌ are more affordable, consume less power, and offer ‌lower latency‌ than ‌active optical cables (AOC)‌ or ‌fiber optics‌, making them ideal for ‌10G, 25G, 40G, and 100G Ethernet‌ connections.

Q3: What lengths are available for ‌SFP+ DAC, QSFP+ DAC, and QSFP28 DAC cables‌?‌
A3: Standard lengths range from ‌0.5m to 7m‌, with popular options like ‌1m DAC, 3m DAC, and 5m DAC cables‌ for ‌rack-to-rack connectivity‌.

Q4: Are ‌DAC cables‌ compatible with ‌Cisco, HPE, Juniper, Dell, and Arista‌ devices?‌
A4: Most ‌SFP DAC and QSFP DAC cables‌ are vendor-agnostic, but always verify ‌compatibility with your switch or server model‌ for seamless integration.

Q5: Can ‌high-speed DAC cables‌ support ‌400G Ethernet‌?‌
A5: Yes, ‌QSFP-DD DAC and OSFP DAC cables‌ now support ‌200G/400G data rates‌, ideal for ‌hyperscale data centers‌ and ‌HPC (High-Performance Computing)‌.

Q6: Do ‌passive DAC cables‌ require external power?‌
A6: No, ‌passive copper DAC cables‌ draw power directly from the device, reducing ‌energy costs‌ and ‌heat dissipation‌ in ‌data center environments‌.

Q7: What is the ‌maximum distance‌ for ‌DAC cable transmission‌?‌
A7: Copper DAC cables‌ typically reach ‌up to 7m‌—beyond this, consider ‌active DAC cables‌ or ‌AOC/fiber optics‌ for longer distances.

Q8: Are ‌DAC breakout cables‌ hot-swappable?‌
A8: Yes, ‌hot-swappable DAC cables‌ (e.g., ‌QSFP+ to 4x SFP+ DAC‌) allow flexible deployment without system downtime.

Q9: How to choose the right ‌DAC cable‌ for ‌10G/40G/100G networks‌?‌
A9: Match your ‌switch port type‌ (SFP+, QSFP+, etc.), ‌data rate‌, and ‌length requirements‌. For ‌high-density setups‌, opt for ‌low-profile DAC cables‌.

Q10: What is the difference between ‌passive DAC‌ and ‌active DAC cables‌?‌
A10: Passive DAC cables rely on device power and support shorter distances (up to 7m), while active DAC cables include signal amplification for extended reach (up to 15m) but consume more power.



Get a Quote/Datasheet

If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Related Products
40G QSFP+ to 40G QSFP+ Direct Attach Passive Copper Cables
40G QSFP+ TO QSFP+ DAC Series

Twinaxial copper cables integrate QSFP+ connectors on both ends, supporting 40 Gbps data rates with passive and active options, fully compliant with QSFP+ MSA and IEEE 802.3ba standards.

1.25G SFP 1550nm 80KM
1.25G SFP ZX 1550nm 80KM LC Optical Transceiver

Duplex LC interface and hot-pluggable design, it incorporates a high-power DFB laser and PIN photo detector.

400Gbps QSFP-DD SR8
400G QSFP-DD SR8 100m MPO Optical Transceiver

400G QSFP-DD SR8 MPO Optical Transceiver‌ The ‌400G QSFP-DD SR8‌ transceiver is a high-speed optical module designed for 400 Gigabit Ethernet applications over multi-mode fiber (MMF).  Applications:‌ 400G Ethernet switches/routers‌ .High-density data center interconnects‌ requiring low-latency, high-bandwidth links. RoHS compliant‌ and engineered for demanding networking scenarios, this transceiver delivers future-proof scalability for next-generation infrastructure.  Up to 53.125Gbps data rate per channel by PAM4 modulation  Support 400GAUI-8 electrical interface  Integrated 850nm VCSEL array and PD array  Single MPO16 connector receptacle optical interface compliant  DDM function implemented  Hot-pluggable QSFP-DD form factor  Maximum power consumption 8W  Single +3.3V power supply  Reach up to 70m on MMF(OM3)  Reach up to 100m on MMF(OM4)  Compliant with ROHS2.0 200G QSFP56 SR4 100M 400G QSFP-DD SR8 100M 400G QSFP-DD DR4 2KM 400G QSFP-DD LR4 10KM 400G OSFP SR8 100M 200G 400G 400G 400G 400G 100M 100M 2KM 10KM 100M 850nm 850nm 1310nm CWDM 850nm MPO MPO MPO LC MPO MM MM SM SM MM DDM DDM DDM DDM DDM COM: 0°C ~70°C COM: 0°C ~70°C COM: 0°C ~70°C COM: 0°C ~70°C COM: 0°C ~70°C FAQ: Q1: What is 400G QSFP-DD? A1: It is a high-density, hot-pluggable optical module interface supporting 400Gbps data rates, featuring 8 electrical channels for enhanced bandwidth. Q2: What are the main types of 400G QSFP-DD modules? A2: Common variants include SR8 (short-range), DR4/FR4 (intermediate), LR4/LR8 (long-range), and ER4/ER8 (extended-reach), with transmission distances ranging from 100m to 40km. Q3: How does OSFP differ from QSFP-DD?‌ A3: OSFP has a larger form factor and non-compatible electrical interfaces, while QSFP-DD is backward-compatible with QSFP28 modules. Q4:What encoding scheme does 400G OSFP use?‌ A4: Data Rate 53.125Gbps (PAM4) per channel(Maximum power consumption 12W), balancing speed and complexity. Q5: What is the maximum transmission distance for 400G QSFP-DD LR4? A5: The LR4 variant supports up to 10km over single-mode fiber (SMF) using 4x106Gbps lanes, ideal for 5G and cloud interconnects. (https://www.etulinktechnology.com/400g-qsfp-dd-lr4-10km-lc-optical-transceiver_p330.html) Q6: What is the electrical interface of QSFP-DD? A6: The module converts 8 channels of 50Gb/s (PAM4) electrical input data to 4 channels of CWDM optical signals and multiplexes them into a single channel for 400Gb/s optical transmission. Q7: Does QSFP-DD support digital diagnostics? A7: Yes, it includes DDM (Digital Diagnostic Monitoring) per MSA standards, enabling real-time monitoring of temperature, voltage, and optical power. Q8: What DAC options exist for 400G QSFP-DD? A8: Available configurations include direct QSFP-DD-to-QSFP-DD, or breakout to 2x200G QSFP56/4x100G QSFP56/8x50G SFP56 for flexible scaling. Q9: How does OSFP differ from QSFP-DD?‌ A9: OSFP has a larger form factor and non-compatible electrical interfaces, while QSFP-DD is backward-compatible with QSFP28 modules.

1.25g sfp transceiver
1.25G SFP 1550nm 200KM LC Optical Transceiver

Fully Compliant with SFP MSA and SFF-8472 with duplex LC receptacle, SONET OC-24-LR-1 and RoHS.

100Gbps 10KM QSFP28 LR4 BOX
100G QSFP28 LR4 10KM LC (BOX) Optical Transceiver

Utilizing four 25.78Gbps wavelengths multiplexed into a single fiber pair via LC connectors. It supports transmission distances up to 10 kilometers over single-mode fiber, complying with the 100GBASE-LR4 standard.

 QSFP28 DAC
100G QSFP28 TO QSFP28 DAC Series

Twinaxial copper cables integrate QSFP28 connectors on both ends, supporting 100 Gbps data rates with passive and active options, complying with QSFP28 MSA and IEEE 802.3bm standards.

10G SFP+ 1550nm 80KM LC DDM
10G SFP+ ZR 1550nm 80KM LC Optical Transceiver

Support 10.3125 Gbps data rates and achieves 80-kilometer transmission distances.

© Copyright: 2026 ETU-Link Technology CO ., LTD All Rights Reserved.

IPv6 network supported

Friendly Links:

易天官网
top

Get a Quote/Datasheet

Get a Quote/Datasheet

    If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

  • #
  • #
  • #