Grade: B Brand & Model: HP Z230 SFF Processor: Intel Core i7 i7-4790 3.6GHz Screen: N/A Memory: 8GB Storage: 500GB SATA Optical Drive: DVD-R Graphics: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller Input Device: N/A Operating System: Windows 10 Pro 64 Bit & Libre Office Wireless: No Bluetooth: No Ports: Front : 8 x USB 3.0 , 4 x USB 2.0, Ethernet Port, 1 x Serial Port, 2 x PS/2, Audio Ports Warranty: 12 Months Lenovo refurbished workstation available from ITZOO.