Asus has just given it's mainstream ultraportable notebook a big update. It's now called the ZenBook 14 OLED UX3402 and it features – you guessed it – an OLED display. The OLED display measures 14-inch and is identical to the ones that are used on the previously reviewed ZenBook 14X OLED and ZenBook 14X OLED Space Edition. The display has...