af (acronym) - alta frecuencia?

The acronym "af" appears in the source, and the machine translation treats it as "high frequency"

Source wrote:9
[01]•[02] [03]Soporte a la recomendación IEEE 802.3 af.[04]

Machine Translation wrote:
[01]•[02] [03]Support to the recommendation IEEE 802,3 high frequency.[04]

https://www.google.com/search?q=IEEE+802%2C3+high+frequency&ie=utf-8&oe=utf-8

Should we go with "high frequency" ?

Looked into it again, and I do not think af = alta frecuencia.

802.3af occurs in English.

Therefor, if the "af" was separated by a space in the source, it should be recombined to the 802.3 (or similar), and not be translated as "high frequency".

http://www.rhyshaden.com/eth_poe.htm