An optical connector includes: a board having a first signal-light
propagation medium with a first optical signal end; and a chassis
disposed on the board. The chassis includes: an insertion-and-removal
section having an insertion-hole forming wall that defines an insertion
hole, into which a second optical signal end of a second signal-light
propagation medium is removably inserted. The wall has: a support
surface. supporting a side face portion of the second signal end; and an
abutting surface on which abuts a front-end portion of the second signal
end. The chassis further includes an optical connection section provided
with a through-hole forming wall defining a through hole optically
connecting the first signal end with the inserted second signal. The
optical connector further includes a biasing member that positions the
second signal end inserted into the insertion-and-removal section by
biasing the second signal end to both the abutting and support surfaces.