It is (dodo) cool but it has some limits ...
dodocool® Portable 3-Port Hub USB 3.0 Superspeed 5Gbps with 1 RJ45 Gigabit Ethernet Lan Network Adapter Cable Supports Windows XP / 2003/2008 / Vista / 7/8, Linux, Mac PC (Electronics) 4
dodocool® Portable 3-Port Hub USB 3.0 Superspeed 5Gbps with 1 RJ45 Gigabit Ethernet Lan Network Adapter Cable Supports Windows XP / 2003/2008 / Vista / 7/8, Linux, Mac PC (Electronics)
I purchased this product to have an ethernet port on my Macbook pro 30 without paying for a single adapter. By connecting directly to the box, it works, however it does not work with a CPL box. The USB ports are performing, and all seems to me good order. The shipment was made on time, nickel.
+1 For packaging is significant (the graphic designer in me speaking) to have a neat design.