NAME ttyS - serial terminal lines DESCRIPTION ttyS[0-3] are character devices for the serialserial RS232/V24 dialout line, see ttyS (4) for a description. DESCRIPTION Introduction The pinout ... pointing to a mouse device. SEE ALSO ttySconsole (2), ioctl_tty (2), termios (3), ttyS (4), vcs (4), pty (7), agetty