- runfw
- s3
- s3virge
- sa
- safe
- savage
- sbni
- sbp
- sbp_targ
- sc
- scc
- scd
- sched_4bsd
- sched_ule
- screen
- sctp
- sd
- sdhci
- sem
- send
- seq_time
- ses
- sf
- sge
- si
- siba
- SIFTR
- siis
- siliconmotion
- simplebus
- sio
- sis
- sisusb
- sk
- sk98lin
- smapi
- smb
- smbus
- SMP
- sn
- snc
- snd
- snd_ad1816
- snd_als4000
- snd_atiixp
- snd_cmi
- snd_cs4281
- snd_csa
- snd_ds1
- snd_emu10k1
- snd_emu10kx
- snd_envy24
- snd_envy24ht
- snd_es137x
- snd_ess
- snd_fm801
- snd_gusc
- snd_hda
- snd_hdspe
- snd_ich
- snd_maestro
- snd_maestro3
- snd_mss
- snd_neomagic
- snd_sb16
- snd_sb8
- snd_sbc
- snd_solo
- snd_spicds
- snd_t4dwave
MAN (4)
Special files (usually devices, those found in /dev) and drivers