either IDE connected CD/DVD-ROM (to boot from the CD/DVD) or USB FlashDisk (to boot from the mass storage device) or maybe some harddisk (to boot SLAMPP from the disk)
either non-emulation booting enabled (to boot from the CD/DVD) or USB FlashDrive booting enabled (to boot from the mass storage device)
At least 512 MB. Higher memory is recommended. (Previously it was set to minimum 256 MB, but it seems it is not big enough for some machines.)
i586 or better, Pentium or AMD are both OK.
PS/2 or USB connected mouse (required for Xwindow only)
serial (COM) mouse is not automatically recognized, but can be used
No harddisk is required. It is only needed if you want to employ SLAMPP permanently, run from harddisk or to save all configurations onto it.