Pros: compatible with all MacBook models requiring a power adapter with an output of 85 watts or fewer

Cons: wall wart does not exactly match the dimensions of the OEM one. OEM inserts (three prong cord and 2 prong niche) will function with this unit, but there is a cosmetic size mismatch. not for the OCD at heart

occasionally, the indicator light will not illuminate when plugged in, this does not normally indicate a lack of operation as is to be expected, so the battery indicator (dots on the side of the machine, or symbol on screen) should be used to ensure that the Book is charging

Other Thoughts: my family is kind of rough on electronics, and the OEM power adaptor got chewed up pretty bad (the tip clean fell off the end by the time we were done). This fills the role of that adapter, so I'm happy

Pros: 7 ports! I think I've only filled it once
proper strain relief on each end of every cable
solid construction

Cons: did not come with a supplemental power adapter
The blue LED on the hub is very bright
some applications may require a USB extension cord. the input lead is only a few inches long

Other Thoughts: I bought two of these to replace some four port hubs that had fallen apart (I don't think I can name it here, but it was shaped like a person). I'm not afraid of these falling apart when I move them or when devices hang off of their appendages.

Side note: these hubs do come with a barrel type 5V port to accept supplemental power, but this particular version does NOT come with the adapter. If this hub is needed for a high power application, I recommend finding the part listing that comes with the additional power supply.