Hi MikroTik,
The Snapdragon X55 in the Chateau 5G does not support 2CC-5G CA or NR CA.
But the Fibocom FM350-GL: https://www.fibocom.com/en/products/5G-FM350-GL.html
Has the Mediatek M80 5G https://www.mediatek.com/technology/5g/5g-modem
Which is the basis of the Dimensity 700 which does support 2CC-5G CA.
Before I go and purchase the m.2 modem: https://www.aliexpress.com/item/1005004444946323.html
Can you advise what you would require to support this modem which is twice the capability of your current Quectel offering?