Lenovo, Think Centre M900, Intel Core i5-6500T CPU 2. 50GHz, 128GB SSD, 8GB Ram, MAR WIN10P, TFF, Graphics 530, T1A, 64 BIT Processor Intel Core i5-6500T CPU 2. 50GHz Turbo boost up to 3. 1GHz 6MB cache Quad core Memory 8 GB RAM DDR4 Configuration: 1 x 8 GB 2 DIMM slots Max supported size 32GB Hard Drive 128 GB SSD Optical Drive N/A Software Operating System: Windows 10 Pro 64 bit Display N/A Form Factor TFF Networking Ethernet LAN Ethernet LAN data rates 10, 100, 1000 Mbit/s Cabling technology 10/100/1000Base-T(X) Port Options 4 x USB 3. 0 2 x Audio 1 x LAN 2 x Display Port 1 x serial Dimensions 179mm x 182. 9mm x 34. 5mm Weight 1. 3kg Warranty / Miscellaneous 24-month warranty RTB