difference between Dlink DI-604 and DI-604 express?

here is a link to both, is it just the looks?
DI-604 express


http://www.techdepot.com/product.asp?ProductID=1619359&CatID=862&IID=856

http://www.officedepot.com/ddSKU.do?level=SK&id=613666&location_info=SG_3_DV_18_SC_1803008_SK_613666

I may or may not have the same exact specs, but it looks like they are one and the same, many people interchange the words router and switch because they are inherently equal in switching and routing capabilities and functions.