iiyama ProLite TF5539UHSC-B1AG computer monitor 139.7 cm (55") 3840 x 2160 pixels 4K Ultra HD LED Touchscreen Multi-user Black Faxing___Mono faxing 3 W Energy efficiency scale

iiyama ProLite TF5539UHSC B1AG computer monitor 139.7 cm (55") 3840 x 2160 pixels 4K Ultra HD LED Touchscreen Multi user Black Faxing___Mono faxing 3 W Energy efficiency scale 3 W Energy efficiency scale A to G Energy efficiency class (SDR) E Energy consumption (SDR) per 1000 hours 21 kWh Packaging content DisplayPort cable length 1 1 Gen 1) Type A ports quantity 2 Keyboard Keyboard backlit colour RGB Keyboard backlit Yes Numeric keypad Yes Pointing device Touchpad Software Operating system architecture 64 bit Operating system installed Windows 11 Home Battery Battery capacity 90 Wh Number of battery cells 4 Battery technology Lithium Ion (Li Ion) Power AC adapter output voltage 20 V AC adapter output current 12 A AC adapter input voltage 100 240 V AC adapter frequency 50 60 Hz AC adapter power 240 W Security Password protection type BIOS