Will the adaptor work on a USA 2 prong plug or only a 3 prong?

Works on either. The phone/tablet chargers we plugged into it had 2 prong plugs. Make sure that adapters will handle 220 to 110 volt current, though. Most newer ones do, but it will be printed in mice type on the adapter.

Does this plug accept polarized two-pronged plugs? (those with one blade wider than the other)

Yes. I just looked at the one I ordered and one side is clearly larger than the other. I also plugged cell phones, laptops, and other high power electronics and it worked fine for all of them. I imagine at least one of those had to have a polarized plug.

Does it work well with 3-prong US adapters over months of use? (Will be Australia for a few months and need it for charging laptop)

3-prong US adapters fit very well into this converter. I only used my adapter for five weeks, but during that time I saw no indication of fatigue problems or anything that might affect it working for months.

how many devices can you plug into each adapter plug?

You can plug two devices into the adapter.

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OREI India US Converter Plug, India to US Adapter, Japan, Philippines & More - Type B Plug - 2 in 1 - Perfect for Laptop, Camera Charger and More - CE, RoHS - 4 Pack - Black - 5 Years Warranty

Product ID: 391977912

Details

Brand
OREI
Colour
Black
Item weight
68 Grams
Item dimensions L x W x H
25 x 25 x 25
Plug type
Type B

⚡3000W max capacity

🌍Universal input compatibility

🔌Dual-port power boost

$51.50

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Description

🌐 Plug in anywhere, power up everywhere!

COMPACT TRAVEL READY - Lightweight 68g design fits effortlessly in your carry-on.
POWER UP WITH CONFIDENCE - Supports up to 3000W, perfect for laptops, cameras, and more.
CERTIFIED SAFETY DURABILITY - CE and RoHS certified with a 5-year warranty for peace of mind.
GLOBAL READY LOCALLY PERFECT - Accepts plugs from nearly every country for seamless travel.
DOUBLE THE POWER DOUBLE THE CONVENIENCE - Plug in two devices simultaneously without compromise.

The OREI India US Converter Plug is a compact, dual-port Type B adapter designed for seamless use of electrical devices from India, Japan, Philippines, and more in US-standard outlets. Supporting up to 3000W with CE and RoHS certifications, this 4-pack ensures safe, reliable power conversion for laptops, cameras, and chargers, backed by a 5-year warranty.

Specifications

Manufacturer	OREI
Part number	P21-5-4PK
Item Weight	68 g
Product Dimensions	2.54 x 2.54 x 2.54 cm; 68 g
Item model number	P21-5-4PK
Size	4 - Pack
Color	Black
Item Package Quantity	1
Plug Format	Type B
Specification met	CE, RoHS
Batteries Included?	No
Batteries Required?	No

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$51.50

Duties & taxes included

In stock

Sold byAmazon British Virgin IslandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to British Virgin Islands.

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