Planet Technology SW-502 - Manual (Page 14)

connection is established with another network device (usually at
Power On or Reset). This is done by detect the modes and speeds at
the second of both device is connected and capable of, both
10Base-T and 100Base-TX devices can connect with the port in either
Half- or Full-Duplex mode. 1000Base-T can be only connected in
Full-duplex mode.