QSFP+ Cable Types

A quad small form-factor pluggable plus (QSFP+) cable is a fiber optic cable capped at either end with the QSFP+ transceiver, which is designed for data rates up to 40Gb/s supporting Fibre Channel, Ethernet, Infiniband standards and so on. It is a solution with high density, high bandwidth and relatively low cost. In the market, there are now four common types of QSFP+ cables: QSFP+ AOC cable, QSFP+ to 4×SFP+ breakout cable, QSFP+ to CX4 copper cable and QSFP+ to 4×XFP cable. This article will introduce these types of QSFP+ cables respectively.


Being compliant with the QSFP MSA and IEEE P802.3ba 40GBASE-SR4, the QSFP+ active optical cable (AOC) is a high performance, low power consumption integrated cable for short-range multi-lane data communication and interconnect applications. QSFP+ AOC cable can integrate four data lanes in each direction with 40 Gb/s aggregate bandwidth. Each of the data lane is capable of transmitting data at rates up to 10Gb/s with lengths ranging from one to 100 m. Furthermore, it can be applied to 40 Gigabit Ethernet, fiber channel and peripheral component interface express (PCIE).

QSFP+ to 4×SFP+ Breakout Cable

Providing much needed space for data centers and cost cuts, QSFP+ to 4×SFP+ breakout cables may make a great cost-effective interconnect solution to IT professionals. Through the use of QSFP+ to 4×SFP+ breakout cables, users can connect their QSFP+ and SFP+ Switches and Network cards without upgrading the entire data center or storage array. The QSFP+ to 4×SFP+ breakout cable has a single QSFP connector rated for 40 Gb/s on one end and four SFP+ connectors, each rated for 10 Gb/s, on the other. It is mainly used for quad date rate (QDR) infiniBand, 40 Gigabit Ethernet and 10Gigabit applications.

QSFP+ to CX4 Copper Cable

QSFP+ to CX4 copper cable has a QSFP connector on one end and a CX4 connector on the other end, which permits auto-negotiation between the two connected devices for optimal network throughput. Adapting the cutting edge technology, QSFP+ to CX4 copper cables provide an excellent hybrid cable solution for CX4/InfiniBand and QSFP rated switches, network adapters, and storage arrays.

QSFP+ to 4×XFP Cable

QSFP+ to 4×XFP cable features a single QSFP connector rated for 40 Gb/s on one end and 4 XFP connectors on the other end, each rated for 10 Gb/s. Since the QSFP+ to 4×XFP cable can merge 40G QSFP and 10G XFP enabled host adapters, switches and servers, users can install it between an available QSFP port on their 40Gb/s rated switch and feed up to four upstream 10Gb/s XFP enabled switches.

QSFP+ cables are ideal for high density signal transmission. And there are various QSFP+ cables sold in the market. As a professional supplier of optical communication products, Fiberstore supplies a wide variety of 40G QSFP+ cables with high quality. Customers may choose the proper QSFP+ cables according to their needs.

Related article:

Direct Attach Copper Cable VS Active Optical Cable (AOC)


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