Micrometers is actually so common that it has a colloquial non-SI name of “micron”
According to wiki:
The micrometre is a common unit of measurement for wavelengths of infrared radiation as well as sizes of biological cells and bacteria,[1] and for grading wool by the diameter of the fibres.[3] The width of a single human hair ranges from approximately 20 to 200 μm.
300mbps down 60 mbps up.
Although aoparently fibre-to-the-premises is available… Just havent got rounf to checking if its symmetrical or worth.