Lenovo 4X77A08635 memory module 64 GB 1 x 64 GB DDR4 3200 MHz Display diagonal___74.9 cm (29.5") height and tilt as well height and tilt as well as providing perfect position of screen for more comfortable and sustainable user experience 0 ports quantity 1 Wrist rest Yes Windows keys Yes Pointing device No Numeric keypad Yes Keyboard language English Full size keyboard Yes Connectivity technology Wireless Certification CE FCC CB Adjustable keyboard height Yes Device interface RF Wireless Keyboard keys operating life 10 million characters Ports & interfaces Frequency band 2 Lenovo 4X77A08635 memory module 64 GB 1 x 64 GB DDR4 3200 MHz The RDIMM configuration along with 3DS TSV DRAM packages exhibits performance benefits and lower power consumption over alternative high density solutions to ultimately provide the lowest TCO for data centers