AWM-P40X is a stackable mounting post that enables the backbone of AWM family solutions to be extended to double length, and reduced to single post length, without disassembling the solution and replacing parts. AWM-P40X is a specialized version of AWM-P40G.

The AWM-P40X post is 15.75" (400mm) and supports virtually unlimited configurations of monitors in a single layer. A second AWM-P40X can be attached to the original post without disassembly or removal. The reverse from two stacked AWM-P40X posts to a single post without complete disassembly is also possible. The two posts connect with an AWM-X40 adaptor which is sold separately.