Dell OptiPlex Core 2 Duo E7400 2.8GHz 4GB 80GB DVD Windows 7 Mini Tower Desktop PC Windows 7 64-bit Intel Core 2 Duo E7400 2.8 GHz dual-core processor 4 GB DDR2 RAM (8 GB maximum), 80 GB SATA hard drive, DVD SATA drive This certified reconditioned product is tested and certified by the manufacturer or by a third-party seller to look and work like new, with some signs of wear.The reconditioning process includes functionality testing, inspection and repackaging.