We got 1500+ at work, and using the part number SKU # and any related number off the box/keyboard itself nothing zilch on Dell's site about it.
googling the SKU (sk-8115) came up with a pic of what i'm talking about on mostly Asian sites, well we here at my work ordered 1500+ and we got some and were here in the good ol US of A...
http://www.pcpop.com/pcpopimg/...13-10-22-597567692.jpg
googling the DP/N 0J4628 turned up squat.
These keybaords rock, they tight, compact and awesome keystroke and I wanna get one for myself but can't find the blanking things on Dell's site -and no i'm not gonna grab one from work.