“Do I need Cat7 or Cat7A cabling?” Before answering the question, checking first the compatibility of such cables. Well, class F channels and Category 7 cables are backward compatible with Class D/Category 5e and Class E/Category 6. Class F introduces stricter requirements for crosstalk and system noise than Class E, achieved by adding shielding to both individual wire pairs and the overall cable. In contrast, unshielded cables rely on tightly controlled twists to protect against electromagnetic interference (EMI). Cables with individually shielded pairs, such as Category 7, depend more on the shielding, allowing the pairs to have longer twists.

The Category 7 standard was ratified in 2002, primarily to support 10-gigabit Ethernet over 100 meters of copper cabling. Like previous standards, it consists of four twisted copper wire pairs rated for transmission frequencies up to 600 MHz.

In 2006, Category 6A was introduced to support 10 Gbit/s Ethernet while still using the conventional 8P8C connector. Care must be taken to avoid signal degradation when mixing cables and connectors not designed for that purpose, even if they appear similar. Most manufacturers of network equipment and cards opted to use the 8P8C connector for 10-gigabit Ethernet over copper rather than the GG45, ARJ45, or TERA connectors originally specified for Class F. As a result, the Category 6 specification was updated to Category 6A to accommodate this use, requiring a Class EA channel (i.e., Cat 6A).

We suggest you to analyse your real business needs and if you don’t need speed above 10Gb to fall back on a most cost effective Cat6A solution.