Staples® Hard Floor Chair Mat, 36" x 48'', Black Nitrile Glove 95 Installed RAM: 16GB Keyboard DVD R 95 Installed RAM: 16GB Keyboard Included: Yes Memory Speed (MHz): 4800 Memory Type: SO DIMM DDR5 4800 Mouse Included: Yes Number of DVI Ports: 0 Number of Display Ports: 3 Number of Expansion Bays: 3 Number of HDMI Ports: 0 Number of Memory Slots Available: 3 Number of PCI Slots: 6 Number of USB Ports: 7 Number of Video Output Ports: 0 Processor Speed (Ghz): 5 numbering machine this chair mat provides a smooth surface that enhances ergonomic comfort by allowing your rolling office chair to move easily Learn more at EcoIDProgram