Seems that Nikon AC adapters EH-61 & EH-62B are VERY sim
Looking at AC adapters for Coolpix 2200 that I'm buying...Nikon site/docs says it uses EH-62B which is new model...thus more costly ($35+- when available) than prior EH-61 ($15-20+- easily available) used with prior Coolpix 2100...
So I called Nikon...asked what was different...plug or voltage or what? Rep said they only changed plug from 90 degree "L" type to a STRAIGHT one! And that EH-61 would work as well...so be warned that sometimes a cosmetic difference can be expensive!
I may just get a USB reader instead!