S3

S3 is a Dell Poweredge 1950 hosted on standby at Noisebridge for Noise-Bot development. It's normally powered down. You can use ipmitool to get a serial console on the Dell BMC. Here's the list of keyboard mappings for the serial-over-lan connection:

        Press the spacebar to pause...

        KEY MAPPING FOR CONSOLE REDIRECTION:

        Use the <ESC><0> key sequence for <F10>
        Use the <ESC><!> key sequence for <F11>
        Use the <ESC><@> key sequence for <F12>

        Use the <ESC><Ctrl><M> key sequence for <Ctrl><M>
        Use the <ESC><Ctrl><H> key sequence for <Ctrl><H>
        Use the <ESC><Ctrl><I> key sequence for <Ctrl><I>
        Use the <ESC><Ctrl><J> key sequence for <Ctrl><J>

        Use the <ESC><X><X> key sequence for <Alt><x>, where x is any letter
        key, and X is the upper case of that key

        Use the <ESC><R><ESC><r><ESC><R> key sequence for <Ctrl><Alt><Del>

Dell manuals are here.