I got an ex475 no Hdd, no disks. I've installed on a nother computer on to an black Hdd windows home server 2011, and insert the hdd in to the server. When I turned it on the health light blinks blue and the Hdd light is shut off. Can anyone help me. I'm new in to this.

Well 2011 will not have all the drivers for the led's.
But 2011 needs to be installed in place so the proper drivers are installed.
It is done with a usb drive inserted in the back usb slot.
Let me see If I can find the article.

Here you go:
http://www.mediasmartserver.net/2010/04 ... rt-server/

Don't skip over the note for a 475(needs more ram)

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EX-490
WHS v1
VGA/PS2 Keyboard/PS2 Mouse/Serial debug board
Q9450s CPU
Stock Ram
ESATA Sansdigital Towerraid TR5M-B
Popcorn C-200
Popcorn A-200
Dune HD Connect
Rasberry PI OSMC(KODI)
ReadyNAS RN316
Amazon FireStick
Amazon ECHO
AnyDvD
MyMovies