NOOK GlowLight is not supported by Digital Editions?

I just purchased an ebook that was transferred to my computer to Digital Editons.  I was under the impression that I could download the book onto my NOOK device.  The box that my NOOK came in says "NOOK" at the top.  It has a glowlight feature.  Is this a special version that is not supported?  The list said the regular NOOK was supported.