purchase of desktop computers , purchase of desktop computers , desk top computer specifications -: desk top: intel processor-high end-ubuntu processor:intel core i5 [email protected], 6 cores, 12 mb cache, tdp-65w chipset:compatible chipset mother board:oem mother board memory:8gb ddr4 ram upgradable to 32 gb hard disk drive:1.0tb 7200rpm or higher graphics adapter:high end graphics adapter with 2.0gb memory monitor:21.5 & ampamprdquo or larger tft/led digital colour full hd monitor with ips display panel. same make as pc keyboard: usb interface, keyboard. same make as pc. mouse: optical with usb interface.same make as pc ports: 6 usb ports or more (atleast 2 usb 3.0 ports and two ports in front panel (atleast 1 should be usb 3.0), hdmi/dp, audio ports optical drive: 8x or better dvd rw drive networking facility:10/100/1000 on board integrated network port,&ampamp wi- fi 802.11 b/g/n connectivity. certifications: i) rohs compliance for product ii) iso 14001 for oem iii)epeat registered warranty: 5 year comprehensive on-site warranty including monitor operating systems: &ampldquoubuntu 16.04 or later should support&amprdquo