Office style PC towers

I have a few IBM ThinkCentre M52 desktop computer. This item is in excellent physical and working condition. This model is very small and compact with great space saver. This item comes with pre-installed softwares that are ready to use. It has been tested, vacuumed out for dust and is very clean.
512MB DDR Ram
40GB Hard Disk Drive
DVD-Rom or CD-Rom (depending on which one you want)
1.44MB Floppy Drive
SoundMAX Integrated Audio
Intel Integrated Graphics Adapter
Intel Pro Ethernet Adapter 10/100
8 x USB 2.0 ports (2 in front; 6 in rear)
2 x Serial Ports
1 x Parallel Port
1 x VGA D-Sub Video Port
Front Jacks for Headphone & Microphone
Genuine Windows XP Professional pre-installed with Service Pack 3
(includes Microsoft COA license)