- Home Page /
- Electronics /
- Computer Accessories /
- Networking Products /
- Network Transceivers /
- 40G QSFP to QSFP DAC Cable Passive Direct Att...
0 ratings
Item #:
140649271
40G QSFP to QSFP DAC Cable Passive Direct Attach Copper Twinax Cable for Cisco5Meter 16.4ft
Item #:
140649271
GBP 61
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
0 ratings
Write a review
In stock
Imported from USA store
QTY:
Order now and get it around Wednesday, August 19
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
Cost-effective copper solution with the lowest total system power and EMI.
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
High-Speed Connectivity
This 40G QSFP+ DAC cable offers exceptional bandwidth for efficient data transmission, ensuring seamless connectivity in data centers and enterprise networks.
Cost-Effective Solution
Designed as a passive direct attach copper solution, this cable provides a budget-friendly alternative to optical cables without compromising performance or reliability.
Compatibility Assurance
Tailored for Cisco equipment, this cable guarantees compatibility and performance, making it an ideal choice for businesses utilizing Cisco networking infrastructure.
Product Details
| Item Weight | 1 lbs (450 grams) |
Who Should Buy?
-
Data Centers
Ideal for connecting high-speed devices in data centers with efficient bandwidth and low latency.
-
Network Administrators
Perfect for network administrators needing reliable and cost-effective solutions for short-distance connections.
-
Cisco Users
Specifically designed for compatibility with Cisco equipment, ensuring optimal performance and reliability.
-
Long-Distance Connections
Not suitable for connections over long distances; limited range due to passive cabling.
Product Description
40G QSFP to QSFP DAC Cable Passive Direct Attach Copper Twinax Cable for Cisco5Meter 16.4ft
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is a 40G QSFP+ to QSFP+ DAC cable?
Answer: A 40G QSFP+ to QSFP+ DAC cable is a type of high-performance network cable designed for connecting switches, servers, and other equipment within a data center. It uses twinax copper technology, allowing for high-speed data transfer (up to 40 Gbps) over short distances, typically up to 5 meters. This makes it ideal for applications requiring low latency and high bandwidth, such as high-frequency trading or media streaming. -
Question:
Why should I use a passive direct attach copper cable?
Answer: Passive direct attach copper cables, like the 40G QSFP+ DAC, are generally more cost-effective than optical cables for short-distance connections. They consume less power and provide excellent electrical performance, making them suitable for applications where minimal latency is critical. They are commonly used for interconnecting networking gear in data center environments, where efficient communication between devices is essential. -
Question:
What devices are compatible with this cable?
Answer: The 40G QSFP+ to QSFP+ DAC cable is compatible with a wide range of devices that feature QSFP+ ports, including Cisco switches and routers. This compatibility ensures that users can seamlessly integrate it into their existing network setups, allowing for high-speed data communication between devices. Additionally, it's often used in multi-gigabit setups within data centers and enterprise networking environments. -
Question:
What is the maximum distance this cable can effectively transmit data?
Answer: The 40G QSFP+ to QSFP+ DAC cable is designed for effective communication over distances of up to 5 meters (16.4 feet). While it is optimal for short-range applications, this distance allows for reliable connections between adjacent equipment, such as racks in a data center. If your connection needs exceed 5 meters, you may need to consider using optical cables for longer distances. -
Question:
What are the advantages of using twinax cables over fiber cables?
Answer: Twinax cables, such as the 40G QSFP+ DAC cable, offer several advantages over fiber cables for short connections. They are lighter, more flexible, and easier to manage, making them suitable for crowded rack spaces. They also tend to deliver a lower overall cost for short runs without sacrificing performance. This makes them a popular choice for data centers looking to optimize their infrastructure efficiency. -
Question:
How can I determine the right cable length for my setup?
Answer: To determine the right cable length, measure the distance between the devices you wish to connect, allowing for some extra length to accommodate routing and slack. Since the 40G QSFP+ DAC cable is available in various lengths, including 5 meters, you can select a length that fits comfortably within your setup while ensuring high performance and accessibility. -
Question:
Is this cable suitable for high-frequency applications?
Answer: Yes, the 40G QSFP+ to QSFP+ DAC cable is well-suited for high-frequency applications, as it supports data transfer speeds of up to 40 Gbps with minimal latency. This makes it ideal for scenarios requiring rapid data exchange, such as real-time data processing, cloud computing, and large-scale data analytics within data centers. -
Question:
Can this cable be used for connecting different brand devices?
Answer: In most cases, the 40G QSFP+ to QSFP+ DAC cable is interoperable across different brands that utilize QSFP+ ports. This means that you can use this cable to connect devices from various manufacturers, including Cisco, as long as they share the same interface. It's essential to check the specifications of both devices to confirm compatibility. -
Question:
What type of environment is this cable best suited for?
Answer: This DAC cable excels in data center environments or server rooms where high bandwidth, low latency, and reliability are critical. It can also thrive in enterprise networks that require robust connectivity between switches, servers, and storage devices. Its durability and performance make it ideal for environments with substantial data traffic. -
Question:
Where can I buy 40G QSFP+ to QSFP+ DAC Cable Passive Direct Attach Copper Twinax Cable for Cisco (5Meter (16.4ft))?
Answer: You can purchase the 40G QSFP+ to QSFP+ DAC Cable on Ubuy, a trusted e-commerce platform that provides a vast selection of tech and networking products. With its user-friendly interface and commitment to quality, Ubuy makes it easy to find and obtain this essential cable for your networking needs in Guernsey.
OLYCOM Network Transceivers Editorial Review
No editorial reviews found
Customer Reviews & Ratings
1 customers ratings
-
5 Star
100%
-
4 Star
0%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
Platform Trust & Buyer Confidence
MT
Mohd
Verified buyer
“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
SJ
Shawati
Verified buyer
“Accurate delivery timing given”
16 June 2026 · via Trustpilot
YB
Youcef
Verified buyer
“Not madly expensive like I thought, and much quicker than promised.”
15 June 2026 · via Trustpilot
LM
Leila
Verified buyer
“Never dealt with Ubuy before, but everything worked out great. Seamless cross border purchasing and shipping. Thanks!”
6/7/2026 · via Trustpilot
KA
Kwame
Verified buyer
“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
GBP 61
Order now and get it around Wednesday, August 19
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Features & Benefits
- Compliant with SFF-8436 specifications.
- Supports data rates up to 10.3125Gbps per channel.
- Available lengths up to 7 meters.
- Optimized for signal integrity with a single 3.3V power supply.
- Widely compatible with Cisco and other open switch devices.
- Individually tested for 100% compatibility before delivery.
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.