Standard for 10 Gigabit Multimode Fiber

To implement different 10GbE physical layer standards, many interfaces consist of a standard socket into which different physical (PHY) layer modules may be plugged. PHY modules are not specified in an official standards body but by (MSAs) that can be negotiated more quickly. Relevant MSAs for 10GbE include (and related X2 and XPAK), and. When choosing a PHY. [pdf]

USB port on the back of the mobile fiber optic router

You may have noticed that your network router has a USB port on the back, but you may be unsure what it's for. The answer to that question depends on your router model, but that little port is incredibl. [pdf]