This Acer Z5801 comes without Keyboard or mouse (I can add them for a little extra. they are not original for this model.) 

upgraded its RAM to 16Gb (DDR3 SDRAM)  and its Processor to an Intel i7 2600 (2.8GHz) 4 Cores 
 in order to run Windows 10 . they run smoothly without any problems at all . 

3 HDMI
4USB
1 eSATA
1 LAN
1 Spdif 
1 TV aerial 

Optical CD/DVD
Card Reader : Memory Stick (MS), MMC, MS PRO Duo, MS Pro-HG Duo, SD, SDHC

Diagonal Display 21" 1920x1080 FullHD
Led Backlight
native Aspect Ratio 16:9

BlueTooth version : 3+HS