Extreme Networks 100G-DACP-QSFPZ 5M Fibre Optic Cable 0.5 m QSFP28 Black
Product Description
QSFP28 Direct Attach Cables are compliant with the SFF-8665 specifications. Various choices of wire gauge are available from 30 to 24 AWG with various choices of cable length (up to 5m). It is compliant with 100G Ethernet (100GBASE-CR4) specifications. So sometimes it is called 100GBASE-CR4 QSFP Cable. It contains four high-speed copper pairs, each operating at data rates of up to 25GbE. So the QSFP28 DAC cable assembly is suitable for power-efficient connectivity for short distance interconnects, such as data center, networking, and high-performance computing application. Sometimes QSFP28 DAC is also called 100G QSFP DAC or 100G QSFP+ DAC. The “QSFP” form factor was originally defined for <10G speeds. When it was adopted for 40G, the name became QSFP+ to denote the higher aggregate performance. The same “QSFP” form factor was later adopted for 100G but the electrical interface had to be upgraded to handle 25Gbps/lane. The electrical interface for 100G can handle up to 28Gbps, hence the engineering and industry name is QSFP28.
