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QFX-QSFP-DAC-3M
3M CABL QSFP+ TO QSFP+ ETHERNET DIRECT ATTACH COPPER TWINAX...
Trusted by the Highest-Stakes Buyers
Federal agencies and Fortune 500 operations source through ORM Systems.
US Government & Defense
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Regional teams and 25+ distribution partners keep stock near you and accountability in your time zone.
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Pay by PayPal or Revolut with full chargeback rights. Order on PO terms, Net-30 for government.
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Every registration we claim is public record — check our federal contractor status yourself before you spend a dollar.
Since 2016, Enterprise-Trusted
Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
QFX-QSFP-DAC-3M is a high-performance direct attach copper cable engineered for high-speed connectivity in data centers and networking environments. Unlike power supplies that are characterized by wattage, modularity, ATX or SFX form factors, 80 PLUS certifications, input voltage ranges, and power factor correction, this DAC cable forgoes these attributes in favor of simplicity and reliability in passive signal transmission.
This product features no fans, bearings, or electronic protections typical of power systems; instead, it offers robust build quality with precision QSFP connectors at both ends, ensuring low latency and stable performance. Although aspects like fan size, noise levels, and common power supply protections are not applicable, QFX-QSFP-DAC-3M is ideally suited for common use cases such as enterprise data centers, high-performance computing switches, and modern networking deployments.
QFX-QSFP-DAC-3M price is $57.00, a 76.3% saving from the Juniper list price of $240.00. QFX-QSFP-DAC-3M is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for QFX-QSFP-DAC-3M for additional pricing. Browse the full Juniper Power Supplies series or explore all Juniper products.
In a high-density cloud provider environment, network architects deploy QFX-QSFP-DAC-3M-3M twinax copper assemblies to link QSFP+ ports on ToR leaf switches directly to spine switches over 3 meters. This direct-attach copper solution delivers 40 GbE throughput with <0.5 µs latency, simplifies cabling management, and cuts per-link capex by up to 50 % versus optical modules—enabling ultra-fast east-west traffic, predictable performance at scale, and streamlined rack design.
A research institution’s HPC and AI teams interconnect compute nodes and GPU servers via QFX-QSFP-DAC-3M-3M twinax cables to QSFP+ network cards and switches in adjacent racks. The short-reach copper links achieve consistent 40 GbE bandwidth and microsecond-class latency, accelerating MPI workloads and distributed training jobs. Leveraging plug-and-play DAC eliminates transceiver power draw, reduces cooling overhead, and maximizes usable rack U-space for compute density.
An enterprise IT group implements a VMware vSAN cluster across two adjacent racks, using QFX-QSFP-DAC-3M-3M twinax copper cables to link hypervisor hosts to aggregation switches. The 3 m copper twinax offers enterprise-grade reliability, zero management overhead, and 40 GbE connectivity at a fraction of optical module costs. As a result, the organization achieves sub-2 ms storage access latencies, simplifies cable runs, and lowers total cost of ownership for converged compute and storage resources.
Mon–Fri: [09:00-16:00]
Avg. response under 30 mins
| QFX-QSFP-DAC-3M |  JPSU-400W-AC |  JPSU-350-AC-AFO |  JPSU-650W-DC-AFI |  JPSU-850W-DC-AFI | |
|---|---|---|---|---|---|
| 80 PLUS Certification | None | 80 PLUS | Bronze | Gold | Gold |
| Cable Type | Flat | Sleeved | Flat | Sleeved | Sleeved |
| Floppy Connector | No | No | No | No | No |
| Modularity | Non-Modular | Non-Modular | Non-Modular | Non-Modular | Modular |
| Product Name | QFX-QSFP-DAC-3M | JPSU-400W-AC Power Supply | JPSU-350-AC-AFO Power Supply Unit | JPSU-650W-DC-AFI | JPSU-850W-DC-AFI |
| RGB Lighting | No | No | No | No | No |
| Use Case | Data Center | Gaming / Workstation | Gaming / Workstation / General Use | Gaming | Enterprise Server / Workstation / Gaming |
| Zero RPM Mode | No | Yes | Yes | Yes | No |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Solid DAC cable with reliable connectivity.
Works perfectly for short range QSFP links.
Good build quality and flexibility.
No signal issues experienced.
Cost effective interconnect solution.
The QFX-QSFP-DAC-3M is a 3-meter QSFP+ to QSFP+ twinax copper cable optimized for 40 Gigabit Ethernet connections in data center environments.
This cable supports 40 Gbps full-duplex throughput, delivering low-latency, high-bandwidth connectivity between QSFP+ ports.
It is fully compatible with Juniper QFX, EX, QFX-Series switches and any QSFP+ port that adheres to the SFF-8436 standard.
The cable features two QSFP+ (Quad Small Form-factor Pluggable Plus) connectors on each end for direct module-to-module attachment.
Twinax copper uses a twin-axial conductor design with superior crosstalk immunity and low insertion loss for reliable short-reach, high-speed links.
The QFX-QSFP-DAC-3M supports reliable 40 GbE transmission up to 3 meters in standard data center environments.
Direct attach copper offers lower latency and power consumption, plus a lower total cost compared to 40 GbE optical transceivers and fiber.
Yes, the twinax cable supports hot-swap functionality, allowing insertion or removal without powering down the system.
Latency is negligible—often under 100 ns per link—ensuring minimal overhead for high-performance compute and storage traffic.
Power draw is typically under 0.5 W per end, minimizing thermal output and overall system power budget.
This cable is rated for 0 °C to 70 °C (32 °F to 158 °F), suitable for standard rack environments.
Yes, it is factory-qualified and tested by Juniper Networks for full interoperability within Juniper QFX and EX platforms.
Ideal for server-to-switch, switch-to-switch or top-of-rack interconnects where short-reach, high-performance links are required.
Align the QSFP+ connectors with the port guides, slide until the latch clicks, and secure without additional tools or configuration.
No configuration is needed—the cable is plug-and-play and recognized automatically by compliant network equipment.
Juniper Networks provides a one-year limited warranty covering defects in materials and workmanship under normal use.
Contact your authorized Juniper reseller or visit the Juniper Networks online store to verify stock and place an order.
United States
