Dell OptiPlex 960 SFF/Core 2 Duo E8400 @ 3.00 GHz/8GB DDR2/160GB HDD/DVD-RW/WINDOWS PRO 32BIT Microsoft Authorized Refurbisher Windows Professional 32Bit. Microsoft is discontinuing offering Windows 7; this product is sold with either Windows 7 or Windows 10. PACKAGE DOES NOT include monitor or keyboard/mouse PACKAGE DOES NOT include monitor or keyboard/mouse