Is HP 726719-B21 compatible with Asrock z270 pro4?

[advent.children91]

Someone gave me a ram module of this model HP 16GB (1x16GB) Dual Rank x4 DDR4-2133 CAS-15-15-15 Registered Memory Kit 726719-B21, I wonder if I can use it in my motherboard, an asrock z270 pro4, when I put it in, it does not boot.

 

[brispuss]

The ASRock Z270 Pro4 only supports standard unbuffered memory (DIMM or UDIMM).

That HP memory is a registered module (RDIMM) which is NOT supported (ie won't work) by the motherboard.