「打直resolution」意思唔係叫你轉隻mon 90度,係講緊隻mon正常打橫放短嗰面(高)幾多pixel
你呢隻係2560x1080,打直resolution就係1080,而佢其實同full HD唔爭好遠(1920x1080)
有少少難解釋咩分別,大概係打橫scan lines推法係同打直pixels唔同
所以響Mini呢種個內顯好差既機,佢出mon既限制其實係響打直嗰度
exactly你呢款個spec係咁:
https://everymac.com/systems/apple/mac_mini/specs/mac-mini-core-i7-2.3-late-2012-server-specs.html
This model simultaneously supports
1920x1200 on an HDMI display or a DVI display using the included HDMI-to-DVI adapter and 2560x1600 on a Thunderbolt or Mini DisplayPort display or even a VGA display (with an optional Mini DisplayPort-to-VGA adapter, which is compatible with the Thunderbolt port).
不過1920唔係實限,因為你打直唔需要出足1200
我自己試過插隻2560x1440既mon經HDMI由同款Mini出,佢當然出唔晒2k,不過就自動resize左去2048x1080 60Hz出 (1920x1200=2073600,2048x1080=2211840,pixel量接近)
假設呢個已經係HDMI port個version (1.2)既bandwidth極限,你2560x1080 (2764800)的確要用mDP出
你需要既係一個HDMI to mDP active轉插,其實支援HDMI 1.2已經夠,不過保險d搵隻支援1.4既