StarTech. com QSFP40GAC7M 40GbE QSFP+ to QSFP+ Direct Attach Cable - 7m Active Copper DAC - MSA Uncoded Compatible
Business volume discounts
Technical guidance
Preparation & staging
QC · ON · AB · BC
Product Features
Technical Overview
This Direct Attach Cable operates at a data transfer rate of 40 Gbit/s, making it suitable for high-bandwidth applications such as data center interconnects, server-to-switch links, and storage area networks. The active design incorporates signal conditioning to maintain signal integrity over the 7-meter length, reducing attenuation and ensuring consistent performance. The cable uses 24 AWG copper conductors with 100 Ohm impedance, optimized for 40GbE Ethernet standards.
The QSFP+ connectors on both ends are male-type, providing a secure and direct plug-and-play connection between compatible devices. The cable supports hot-swapping, enabling installation or replacement without powering down equipment. It is compliant with MSA (Multi-Source Agreement) specifications for uncoded transceivers, ensuring broad compatibility with switches from vendors like Ubiquiti, D-Link, Netgear, Supermicro, and TP-Link.
Key Product Advantages
The StarTech.com QSFP40GAC7M Direct Attach Cable offers several advantages for network deployments. Its active copper construction provides a balance of performance and affordability, eliminating the need for expensive fiber optic transceivers and cables while maintaining high-speed connectivity. The MSA uncoded compatibility ensures reliable operation with a wide array of network switches, reducing compatibility concerns and simplifying procurement.
Cost-Effective Performance
This DAC delivers 40 Gbps speeds at a lower total cost of ownership compared to fiber solutions, with no additional transceivers required.
- Reduces hardware costs
- Simplifies cabling infrastructure
Enhanced Reliability
Factory-terminated connectors and robust construction minimize signal loss and maintenance needs, ensuring stable long-term operation.
- Lifetime warranty
- Durable PVC jacket
Deployment / Use Cases
This cable is ideal for data center and server room environments where high-speed, short-reach connections are required. It is commonly used for connecting top-of-rack switches to servers, linking switches within the same rack, or interconnecting network devices in adjacent racks. The 7-meter length provides flexibility for cable management and routing within standard rack configurations.
Typical applications include 40GbE Ethernet networks, high-performance computing clusters, and storage arrays requiring fast data transfer. The cable's compatibility with MSA uncoded switches makes it suitable for heterogeneous network environments, supporting equipment from multiple vendors. Its low power consumption and hot-swappable design further enhance its suitability for always-on data center operations.
Data Center Interconnects
Connect servers and switches within racks or between adjacent racks for high-speed data transfer.
- Server-to-switch links
- Intra-rack connectivity
Network Upgrades
Upgrade existing 10GbE infrastructure to 40GbE without replacing entire cabling systems, leveraging compatible switches.
- Bandwidth expansion
- Backward compatibility planning
Physical Profile
The cable has a black PVC jacket that provides durability and flexibility for easy installation in tight spaces. With a length of 7 meters (23 feet) and a weight of approximately 1.08 pounds, it is manageable for standard rack deployments without excessive bulk. The compact QSFP+ connectors ensure a secure fit while minimizing strain on device ports.
- Weight
- 1.08 lb (490.45 g)
- Length
- 23 ft (7 m)
Highlights
- 40 Gbps data transfer rate for high-speed networking
- 7-meter active copper Direct Attach Cable (DAC)
- QSFP+ to QSFP+ connectors with male interfaces
- MSA uncoded compatibility for broad switch support
- Hot-swappable design for easy installation and maintenance
- Active signal conditioning for reliable performance over distance
- Durable PVC jacket and copper construction
- Lifetime warranty from StarTech.com
- RoHS, WEEE, and REACH environmental compliance
- Low power consumption for energy-efficient operation
Specifications
| Specifications | |
|---|---|
| Manufacturer | StarTech.com |
| Manufacturer Part Number | QSFP40GAC7M |
| Brand Name | StarTech.com |
| Product Name | Twinaxial Network Cable |
| Packaged Quantity | 1 Each |
| Product Type | Network Cable |
| Technical Information | |
| Cable Type | Twinaxial |
| Cable Length | 23 ft (7 m) |
| Connector Type on First End | QSFP+ Network - Male |
| Connector Gender on First End | Male |
| Connector on First End Details | 1 x QSFP+ Network - Male |
| Connector Type on Second End | QSFP+ Network - Male |
| Connector Gender on Second End | Male |
| Connector on Second End Details | 1 x QSFP+ Network - Male |
| Device Supported | Network Device,Server,Switch,Transceiver |
| American Wire Gauge | 24 AWG |
| Data Transfer Rate | 40 Gbit/s |
| Features | Active,Flexible,Tight Buffer,Hot-swappable |
| Physical Characteristics | |
| Color Family | Black |
| Product Color | Black |
| Product Material | Copper |
| Jacket Material | Polyvinyl Chloride (PVC) |
| Weight (Approximate) | 1.08 lb (490.45 g) |
| Miscellaneous | |
| Environmentally Friendly | Yes |
| Environmental Compliance | Restriction of Hazardous Substances (RoHS),Waste Electrical and Electronic Equipment Directive (WEEE),Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) |
| Country of Origin | Taiwan |
| Warranty | |
| Limited Warranty | Lifetime |
User Manual
FAQ
What is the data transfer speed of this Direct Attach Cable?
This cable supports a data transfer rate of 40 Gbit/s (40 Gbps), making it suitable for high-bandwidth applications such as 40GbE Ethernet networks, data center interconnects, and server-to-switch connections. It provides full duplex performance for efficient data transmission.
What does MSA uncoded compatibility mean for this cable?
MSA uncoded compatibility means this cable adheres to the Multi-Source Agreement specifications for uncoded transceivers, ensuring it works with a wide range of MSA-compliant network switches. This includes switches from vendors like Ubiquiti, D-Link, Netgear, Supermicro, and TP-Link that accept uncoded modules, reducing compatibility issues.
How long is the cable and what is it made of?
The cable is 7 meters (23 feet) long and constructed with a twinaxial copper core for reliable signal transmission. It features a durable black PVC jacket that provides flexibility and protection, making it suitable for installation in server rooms and data centers.
Is this cable hot-swappable and what are the connector types?
Yes, this cable is hot-swappable, allowing you to install or replace it without powering down your network equipment. It has QSFP+ Network - Male connectors on both ends, with two male connectors total, designed for direct attachment between compatible devices.
What is the warranty and environmental compliance for this product?
This cable comes with a lifetime warranty from StarTech.com, covering the cable itself for its usable life. It is environmentally compliant with RoHS (Restriction of Hazardous Substances), WEEE (Waste Electrical and Electronic Equipment Directive), and REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) standards.
What are typical use cases for this Direct Attach Cable?
Typical use cases include connecting servers to top-of-rack switches in data centers, linking switches within the same rack, and interconnecting network devices over short distances. It is ideal for 40GbE Ethernet deployments, high-performance computing, and storage networks where cost-effective, high-speed copper connections are preferred over fiber.
| Qty | Price | Available |
|---|
