Check the listing for details. Dell OptiPlex USFF Computer RS232 Serial and Parallel Port Windows XP Pro. Condition: Used. Listed at 119.90 USD. 30 Day WarrantyUp for sale is a Dell OptiPlex business USFF (Ultra Small Form Factor) desktop. This machine has been cleaned and fully tested with Dell diagnostic CD and is pre-loaded with a clean install Windows XP Professional SP3 with all device drivers. Warning; Windows XP is older operating system and may not be suitable for internet use.This listing only includes the computer and power cable, No CD's or manual included. Previously used might possess sign of use (missing model badge etc.) Guaranteed NO bad capacitor on the motherboard. Specifications of the machine are as follows: Processor / CPU:Intel Pentium D or Core processorMemory / RAM:2 (Upgrade is available by request)Hard Drive :Optical Drive:250GB DVD or CD playerNetworking: 10/100/1000 Ethernet Port Pre-installed OS-Windows:Microsoft Windows XP Professional 32-Bit. Other Details: VGASerial PortParallel Port 7 USB 2.0 Ports Audio Out Microphone In