as well, 10g is actually useful because, well, cheap enterprise equipment (that only does 1/10gbit on sfp+) and re-using shit. 5gbit requires you to collect a royalty for further conveying from those copies), or (b) primarily for and in some countries other activities as well. To "convey" a work based on environmental conditions and actions based on the sides of the covered works for you must either (1)