Operating System : 4690 OS V4R1, Windows 2000/SPx, Windows XP/SP2, WEPOS, SUSE Linux, PC DOS Processors : Intel Celeron 2.0 GHz Memory Support : 256 MB min - 2 GB max Hard Drive : 40 GB or Larger (opt.) Removable Storage : External CD-RW/DVD or DVD-RW Expansion Slots : 2xPCI (no ISA) I/O Ports : 2 x USB, 2 x RS-232, Parallel, 2 x PS/2, VGA, Audio I/O Communications : Ethernet, Fast Ethernet Dimensions : 32 x 47.5 x 11.7 cm Weight : 10 kg