Features This computer was designed with the user in mind. Here are just a few of its many features: Performance Intel® Desktop P4P CPU with packing mPGA 478 package PC2100 DDR SDRAM, Maximum memory up to 2GB (with two 1024MB SODIMM when available) Internal optical drive (swappable with optional drive) Removable PCI Bus Master Enhanced IDE hard disk Li-Ion main battery pack Power management system with ACPI (Advanced Configuration Power Interface)