There are 2 ways to mount this cabinet to a wall and then the fixing method depends on the type of substrate you are attaching too (BRick/Concrete/Drywall/Plasterboard)

Both methods require the use of some sort of Anchor Bolt........ get proper name

In the box 4 are included but it is unclear which method they are suitable for.

Method 1 - Mounting plate

Pros

• Easier to mount because you place and attach the mounting plate without the bulk of the cabinet
• Allows easy removal of the cabinet by just undoing to non-load bearing screws.

Cons

• I feel that over time if the cabinet is heavy, that this will eventually pull the mountings out or damage the drywall because the cabinet will always be pulling on an angle rather than straight down.

Method 2 - Large Bolt Holes

Pros

• Will hold heavy weight without fear of the bolts coming out over time for the Drywall failing
• Because you are using 4 holes the weight is more evenly spread and there is a modicum of cantilever effect happening, to a different extent depending on the substrate being attached too.
• The holes might be set at an industry spacing so could allow for easy replacement of the cabinet.

Cons

• Harder to install