\d+a Unicode decimal digit, repeated at least once
xthe literal x (12010 / 1708 / 7816) (case sensitive)
\d+a Unicode decimal digit, repeated at least once
Non-Capturing Group(?:\.\d+)? ?repeats the group contents below at most once:
\.the literal . (4610 / 568 / 2E16)
\d+a Unicode decimal digit, repeated at least once
\s*a Unicode whitespace character, repeated any number of times
GHzthe literal text GHz (case sensitive) g modifier: global. Finds all matches instead of stopping after the first
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string