Dell have just issued 4 general coupon codes discounting everything from PowerEdge servers to Projectors
The discounts aren't huge 5% - 15% but obviously being site wide you can apply them anywhere. The discounts are:
5% off PC's between $1000 and $2000
10% off PC's over $2000
12% off monitors, projectors and printers
15% off poweredge servers.
I've listed these coupons under Dell consumer but from what I can make out they should apply to both consumer and small business sites. I've written off to confirm it. The codes are valid until 02.08.2013. Unfortunately you can´t stack them on top of other discounts from Dell.
See the link below to the Dell Coupons page for the list.