We have QTY (72) HP Z220 SFF Workstations available for sale. Each unit has been tested and is a clean working pull in grade A/B+ condition; loaded with an Intel i5-3470 QC proc operating at 3.2Ghz, 4GB of PC3-12800 RAM, No hard drives but includes the tray. All units include a 30 day guarantee. A spreadsheet is available upon request with all the pertinent specs for each unit. Send me your offers or questions. Thanks for looking!