I think its a must. I found a tiny and very portable Belkin 4 port powered hub in my basement and was going to recycle it, but thought hey, this is a must for when I carry my SP3 around. Because 1 USB port is very limiting at times when on the go especially for those who carry a mouse with them as well. I will obviously not carry the power cord around to the hub, just the hub but its nice knowing I can bring the power cord too if I run heavy devices off it.