The pcelx driver supports the 3COM EtherLink III PCMCIA PC Card as a standard Ethernet type of device conforming to the DLPI interface specification. The driver supports the hot-plugging of the PC Card.
The PPA (Physical Point of Attachment) is defined by the socket number the PC Card is inserted in. This means that for IP use, the PC Card should always be plugged into the same socket that the network interface was initially brought up on or else a network reconfiguration should be done to take down the old interface and bring up the new one.
The 3C589, 3C589B, and 3C589C versions of the PC Card are supported on the IA platform. The 3C589B and 3C589C are supported on the SPARC platform.
DLPI Style 2 device
DLPI Style 1 device where: n is the PCMCIA physical socket number.