Black Box CityLIGHT LCL533A Manual page 10

CITYLIGHT 10/100 ETHERNET TRANSCEIVER CARD
NOTE: The CityLIGHT 10/100 is a transceiver. The devices attached to the
CityLIGHT 10/100 Ethernet Transceiver at either end MUST have the
same highest common capability and operate in the same mode and
speed, e.g. all elements of the link must be operating at say 10 Mbps
Full-Duplex or all at 100 Mbps Full-Duplex. It is not possible to mix
Half- and Full-Duplex operation or 10 Mbps and 100 Mbps operation
on the same link.
NOTE: The CityLIGHT 10/100 Ethernet Transceiver will advertise all these
capabilities and operates transparently in Half- or Full-Duplex mode.
However care must be taken when the local port operates in Half-
Duplex mode as distance is limited by the Half-Duplex Ethernet
protocol. In Full-Duplex Mode the Ethernet Protocol does not limit
distance.
10