IBM M50 8187 Thinkcentre 2.6 - 2.8 ghz P4 Desktop with COA and fresh install of XP Proffessional.
These unit have 40 gb hard drive (minimum), cd rom and 1.44 floppy drive. They have a minimum of 256k ram. The Thinkcentre M50 has many USB ports (4 or 6).