Firstly, Passport II Pro has 61W Power Delivery, while Passport 30W has 30W Power Delivery. Secondly, Passport II Pro upgrades to 5 USB ports (2x USB-C & 3x USB-A) and 10A auto-resetting fuse while Passport 30W has 4 USB ports and 6A auto-resetting fuse. Though Passport II Pro has more powerful features and performance, it is 20% smaller than Passport 30W.
The USB-C(1) delivers up to 61W output individually, supporting PD3.0 + PPS (3A). Both USB-C(2) and USB-A ports support up to 12W output each. When using USB-C(1) & other USB ports, USB-C(1) delivers 45W output and others are 12W in total.
No, Electrical grounding will make Passport II Pro bulky and increase product cost, and most travel products do not need to be grounded (99% of the travel conversion plugs on the market are not grounded). After comprehensively taking everything into consideration, we decided not use grounding.
As for the 10A auto-resetting fuse, it mainly protects the device against short circuits or large current overloads. It's not an alternative for electrical grounding.
Finally, it is recommended that if you need to use high-power grounded appliances in an emergency case, you can ONLY use it temporarily. Users should unplug Passport 2 pro after that and please do not connect it to the socket for a long time.
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