must ask qrestions about the B+ model
1. Is the B+ ethernet port limited to ~25megabit or is that fixed?
2. The more USB connectors the more problems you will have with powering the device Whats the maximum mW/mA that you can have connected to this 4 ports.
3. Whats the form factor now.. Old was 85x56mm
4. can i still use my mobile charger 5v 1A or do i have to buy a 5v 2A charger
