The most common split keyboard layouts are 6x4, 6x3, and 5x3, which represent the number of columns and rows. For some high-end split keyboards, such as Corne, Sofle, and Ergodox, their layouts may vary, but generally speaking, they are also based on the 6x4, 6x3, and 5x3 designs.

When choosing a split keyboard layout, you need to consider your own typing habits and needs. For example, if you often use number keys and arrow keys, you need to choose a layout with enough number keys and arrow keys, such as 6x4 or 6x3 layouts. If you need more editing keys and function keys, you can choose a 5x3 layout or a smaller layout.

In addition, you also need to consider the portability and stability of the split keyboard. If you often carry the keyboard, you can choose a compact and lightweight split keyboard, such as a 6x3 or 5x3 layout. If you need to use the keyboard in a fixed place, you can choose a more stable split keyboard, such as a 6x4 layout or larger layout.

Finally, before purchasing a split keyboard, it is recommended that you understand the characteristics and advantages and disadvantages of different brands and models of split keyboards to choose the one that suits you best. At the same time, you can also refer to other users' reviews and use experiences to better understand the advantages and disadvantages of different split keyboards and their application scenarios.