The QSFP4SFPPC1M is an MSA Compliant QSFP+ direct-attach Twinax breakout cable. It is designed, programmed and tested to bridge 40G network equipment with 10G compatible servers or routers. This passive Twin axial cable connects a single QSFP+ port to four 10G SFP+ ports and is fully hot-pluggable making upgrades and replacements seamless by minimizing network disruptions.

At 1 meters long and designed for short-length, high-speed interconnects, this low-power, low-latency copper QSFP+ cable also uses a cost-effective cabling alternative to fiber-optic assemblies. It supports short-distance applications such as point-to-point in-rack and across-rack network switch or server connections, for up to four 10G SFP+ devices.

StarTech.com SFP Cables

All StarTech.com QSFP & QSFP+ cables are backed by a lifetime warranty and free lifetime multilingual technical support. StarTech.com offers a wide variety of direct-attach SFP Cables and SFP modules, providing the convenience and reliability you need to ensure dependable network performance.

• Delivers reliable copper 40 GbE Ethernet connections
• StarTech.com SFP cables are backed by a lifetime warranty
• Uses a cost-effective cabling alternative to fiber-optic setups
• Complies with Multi-Source Agreement (MSA) industry standards
• Low power consumption of less than 1 W
• Hot-swappable

• Use in 40Gb/10Gb mixed Ethernet network applications
• Point-to-point in-rack server or network switch connections, for up to four devices

• QSFP+ to 4x SFP+ cable

What is a SFP Transceiver?
The SFP also known as ’small form-factor pluggable’ is a compact hot-swappable device that plugs into a SFP port of a network device or switch and is most commonly used for telecommunication and data communication applications. SFPs support communication using either fibre optic or copper networking cable. SFP optics have a transmitting side (Tx) and a receiving side (Rx). The transceiver communicates using a laser to the receiving side of the other optic network device. SFPs are built to support many different communication standards such as Gigabit Ethernet, Fibre Channel and SONET.

What is the difference between SFP & SFP+ transceivers?
SFP and SFP+ transceivers are very similar in terms of size and appearance. Primarily the key difference being that SFP+ is commonly used in Gigabit Ethernet applications while SFP is for 100Bse or 1000Base applications and SFP maximum data rate is limited to 10Gbps whereas SFP= transceivers support higher but also accounts for a difference in transmission distances. It’s important to note that a SFP+ transceiver cannot be plugged into an SFP port as SFP+ do not support speeds less than 1Gbps.

What is QSFP Transceiver?
QSFP also known as Quad small factor pluggable is a 4 channel type of compact hot swappable transceiver and is used for 40 Gigabit ethernet data communication applications. These devices support Ethernet, Fibre Channel, InfiniBand and SONET/SDH standards with different data rate options. The most common types include: 4x1Gbps QSFP, 4x10Gbps QSFP+, 4x28Gbps QSFP28.
QSFP+ and QSFP28 are the latest versions and support numerous 40Gbps and 100Gbps applications. Both QSFP+ and QSFP28 modules integrate 4 transmit and 4 receiver channels.