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11 Oct

Introduction to QSFP to SFP+ Cables

Publié par Emily Twain  - Catégories :  #DAC cables

The present 10G network infrastructure has absolutely no more capacity from which we can grow. They just need to scale it up by using 40-Gigabit Ethernet QSFP+ equipped devices and with further scalability options in the near future. But most people may run into an awkward situation that they are out of money to upgrade all of the 10G hardware. Thus owing to the price perspective, some users still stay at 10G Ethernet network. QSFP+ to SFP+ cables or QSFP+ to 4SFP+ fanout cables are introduced to offer a highly cost-effective way to establish a 40G links, which is sure to be a great news to them. QSFP+ to SFP+ direct attached cables (DAC), as an essential component to support 40G connectivity, will be introduced in this passage.

QSFP+ Cables

Despite the fact that there are several QSFP+ cables available for sale, the optical QSFP+ DAC cables are sure to be the best of them. In general, QSFP+ DAC cables are marked as the most cost-effective cables used inside a short distance for 40G data center connectivity. This cables are exceptionally flexible and utilize the QSFP+ connector to compose the most of signal’s potency.


Compared with the fiber optic cables, this cable features firmness and thickness, which make up its sturdiness and reliability. The QSFP+ to SFP+ cables are supposed to be factory terminated in order to meet up the discrete specifications so that it can be ordered to the length. Another feature of the cable which makes it idiosyncratic is its robustness. The cables are made up of leading edge technology and try to allow you to cherish your internet for long hours. There are basically two types of QSFP+ DAC cables: QSFP+ to QSFP+ cables, QSFP+ to SFP+ cables. The following part will continue to talk about the QSFP+ to SFP+ cables.

QSFP+ to SFP+ Cables

QSFP+ to SFP+ cables connect a single 40G QSFP+ port of a QSFP+ switch on one end and four SFP+ ports of s SFP+ on the other end, allowing users to connect multiple ports of SFP+ equipment to QSFP+ based equipment with a single, easy-to-manage assembly just as seen in the below image. The QSFP+ to SFP+ hybrid assembly's four hot-pluggable SFP+ connectors are factory-terminated to twinaxial shielded cable to provide superior signal integrity in support higher frequency data rates. The assemblies are impedance matched to ensure interoperability with SFP+ host ports and minimize insertion loss.


The four 10G SFP+ connectors feed into a single 40Gb/s capable QSFP+ connector. The 4-lane QSFP+ form factor interface supports up to 10Gb/s per lane, providing 40G data transfer rates. In terms of both physical connector space and data throughput, a single QSFP+ connector can replace up to four standard SFP+ connections, providing greater port density and reduced system cost.

Designed for link lengths up to 5 m, these low-power interconnects are compatible with a wide array of data protocols, including InfiniBand 4X SDR, DDR, QDR as well as Ethernet 10G, 40G (IEEE-802.3ba) and SONET electrical failover 40G links. They also support Fibre Channel SAN 10G, 40G and SAN; RapidIO and Myrinet 40G systems links.


Maybe it is the ideal time for you to cost-effectively upgrade from your older, slower 10G networks to the newer, faster 40G optical network by using the 40G copper cables. QSFP+ DAC cables, especially the QSFP+ to SFP+ cables, will be sure to offer you a remarkable and hassle free experience. If you have made up your mind to embrace a brand new internet speed, FS.COM’s QSFP+ and SFP+ interconnects is automated, and walk through the testing challenges and 100% compatibility.

Our QSFP+ to SFP+ hybrid cable assemblies were developed as a cost-effective means of integrating higher performance QSFP+ equipment with current SFP+ systems in high-performance computing, enterprise networking, video networking and network storage applications. Each end of the hybrid assembly is compliant to the SFF specifications that define the mechanical and electrical requirements for interoperability. If you have any requirement of our products, please send your request to us.

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