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 European Adapter Plug, Travel Adaptor for Europe Schuko Countries 2 in 1, for Germany France Iceland Netherlands Russa Greece Spain - Safe Grounded Connection - Universal Socket - 4 Pack

Product ID: 1328346

Details

Brand
OREI
Color
Type E/F -
Input Voltage
250 volts
Item Weight
3.2 ounces
Item dimensions L x W x H
1.75 x 2.5 x

🌍Universal socket fits global plugs

🔌2-in-1 dual plug design

🛡️CE certified & lifetime warranty

¥3424

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Description

🌍 Plug in anywhere, power up everywhere — travel smart, stay connected!

DEVICE FRIENDLY - Perfect for charging laptops, smartphones, power banks, and more—just ensure your device supports local voltage.
SAFE CERTIFIED - CE and RoHS certified with lifetime warranty—travel worry-free with tested, grounded connections.
DUAL PLUG POWERHOUSE - Seamlessly accepts both US 2-pin and European round plugs in one sleek adapter.
GLOBAL COMPATIBILITY - Universal socket supports nearly all international plugs (except Type M), perfect for your European travels.
COMPACT LIGHTWEIGHT - Slim design (1.75 x 2.5 x 1.75 inches) and just 3.2 oz, ideal for the minimalist traveler’s carry-on.

The OREI European Adapter Plug is a compact, dual-plug travel adapter designed for Schuko countries including Germany, France, and Spain. Featuring a universal socket that accepts most global plugs (except Type M), it provides a safe, grounded connection certified by CE and RoHS standards. Lightweight and durable, this 4-pack adapter set is perfect for charging a wide range of devices on the go, backed by a lifetime warranty. Note: it adapts plugs only and does not convert voltage.

Specifications

ASIN	B008JCVF0U
Best Sellers Rank	#51,851 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #216 in Electrical Adapters
Brand	OREI
Color	Type E/F - Germany/France (Schuko)
Customer Reviews	4.6 4.6 out of 5 stars (1,636)
Global Trade Identification Number	00045635179554
Input Voltage	250 volts
Item Dimensions	1.75 x 2.5 x 1.75 inches
Item Weight	3.2 ounces
Manufacturer	Orei
Manufacturer Contact Information	[email protected]
Mfr Part Number	DESY-01-027
Model Number	P21-9-4PK
Number of Items	1
Number of Outlets	2
Number of Packs	4
Output Voltage	250 volts
Packer Contact Information	[email protected] , 99250 12671
Plug Type	Type E/F
Power Source	Corded Electric
UPC	045635179554
Unit Count	4 Count
Warranty Description	5 year limited warranty

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¥3424

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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