purpose of "/usr/lib/modules-load.d" & "/usr/lib/modprobe.d" ?

[Bruno Wolff III]

On Sat, Jul 21, 2012 at 15:26:14 +0200,
   Frantisek Hanzlik <franta at hanzlici.cz> wrote:
>Frantisek Hanzlik wrote:
>> In F16? is new directory "/usr/lib/modules-load.d" and in F17 new
>> "/usr/lib/modprobe.d". For which purposes these directories serves?
>> Modprobe man pages mention second of them, but without any
>> explanation.
>
>Sorry, "modules-load.d" has man page. But what "/usr/lib/modprobe.d"?

modules-load.d is for what modules to load. modprobe.d is for supplying 
configuration for doing the load. Some modules won't need configuration.