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Manual Pages  — SN


sn – Ethernet driver for SMC91Cxx based cards



To compile this driver into the kernel, place the following lines in your kernel configuration file: device sn

Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):



The sn driver is not present in FreeBSD 13.0 and later. See https://github.com/freebsd/fcp/blob/master/fcp-0101.md for more information.


The sn device driver supports SMC91Cxx based ISA and PCMCIA cards.


The sn driver supports SMC91Cxx based ISA and PCMCIA cards including:

The sn driver supports the SMC 91C90, SMC 91C92, SMC 91C94, SMC 91C95, SMC 91C96, SMC91C100 and SMC 91C100FD chips from SMC.

The Farallon EtherWave and EtherMac card came in two varieties. The ep(4) driver supports the 595 and 895 cards. These cards have the blue arrow on the front along with a 3Com logo. The Farallon 595a cards, which have a red arrow on the front, are also called EtherWave and EtherMac. They are supported by the sn driver.


ed(4), ep(4), ie(4), intro(4), ng_ether(4), vx(4), ifconfig(8)


The sn device driver appeared in FreeBSD 4.0 .

SN (4) October 24, 2018

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