Dell PowerEdge NX440 OS Depolyment

Hi,

I have found in our storage old NX440 which I would like to setup and use for internal proposes.

There is a license key for WSS 2016, but when try to deploy the OS via Lifecycle, I need to provide DVD or USB with the OS.

I can't find it in our office, but pretty sure its available somewhere to download? or maybe I missed it somewhere else in the lifecycle menus?

Thanks!