6 of 6 people found the following review helpful
Well worth having,
Verified Purchase(What is this?)
This review is from: Samsung USB Connector to microUSB for Samsung Galaxy S2 / S3 (ET-R205UBEGSTD) (Wireless Phone Accessory)
I tried 2 similar adaptors I bought from eBay at half the cost and they did not work so I bought the official Samsung one and sure enough any cordless mouse or keyboard worked perfectly. Also a memory card plugged in shows up as an extra drive on the device. I do believe a standard hard drive (providing it has it's own power supply) works but haven't tested that. I have successfully connected a mini 2.5GHz wireless keyboard with trackpad combo too!
I use this on a Samsung Galaxy Note GT-N7000 (UK version) with Gingerbread 2.3 and Ice Cream Sandwich 4.03