Lubuntu 13.04 Live CD + WiFi 802.11n 150Mbps USB Adapter Deploys a fast and lightweight Linux operating system based on Ubuntu. Includes Pcmanfm, Openbox, Lightdm, Chromium, etc. LXDE desktop: LXDE stands for Lightweight X11 Desktop Environment. Designs for a low-system-requirement, low-RAM environment for netbooks, mobile devices, and older PCs. The minimum system requirements for Lubuntu 13.04 are a Pentium II or Celeron CPU with PAE support, 128 MB of RAM and at least 2 GB of hard-drive space.