Charging Adapter PA-1900-02D prong configuration

I work at a school where we use Dell Latitudes for staff and students. I have two charging adapters that still function, but the 3 prong power cable has failed. For this model of adapter, I see that there are prong configurations that are inline, and others that are angled or "clovered." The cords I need are inline.

Is there somewhere I can purchase a power cord for these adapters (not the whole adapter) that have an inline prong configuration?