Digital Equipment 300 Series AXP Reference Manual page 283

Ethernet
A local area network (LAN) or wide area network (WAN) that
connects (by coaxial cable) multiple computers that are running
a variety of network operating systems. Ethernet transmits
10 megabits per second and does not require switching logic or
control by a central computer.
Ethernet controller
An interface unit that connects a system to the Ethernet.
Ethernet hardware address
The unique Ethernet physical address associated with a
particular Ethernet communications controller.
Ethernet ports
The connectors on the system unit through which the Ethernet
is connected to the system.
Ethernet subsystem
The Ethernet controller chip built into the system module.
expansion box
An option that can be attached to your system that holds one
or more TURBOchannel option modules, hard disk drives, and
removable-media drive.
Factory-Installed Software (FIS)
Operating system software that is loaded into an internal fixed
disk and installed in the system unit during manufacture. On
site, the FIS is bootstrapped through the system disk, prompting
a predefined menu of questions on the final configuration.
fatal error
An error from which a process cannot recover. Fatal errors are
either those that cause the CPU to stop, or disk-write errors that
occur at any time except when the disk drive is being powered
down or write-locked.
FDDI
See Fiber Distributed Data Interface
Glossary–11