If you have a network card of this type, say Y and check out the
(arguably) beautiful poetry in
<file:Documentation/networking/arcnet.rst>.

You need both this driver, and the driver for the particular ARCnet
chipset of your card. If you don't know, then it's probably a
COM90xx type card, so say Y (or M) to "ARCnet COM90xx chipset
support" below.

To compile this driver as a module, choose M here. The module will
be called arcnet.