I didn't buy this item off Amazon, but all these generic adapters are one in the same. They usually come with two cords: one for the NES/SNES and another for the Sega Genesis. I'm not sure how they work for the Genesis, but use these for your Nintendo systems with caution. The part that plugs into your console doesn't fit properly. Now while it will  power the system, the SLIGHTEST movement of your console will cause a power surge. Since Nintendo controllers are obviously not wireless, this is very easy to do. This happened once and immediately froze the game. Luckily my system still works, but a surge like this could ruin it. Anyone who is a Nintendo collector knows NES/SNES/N64 and their games are rising in price and would rather not have to buy a new one. If you value your systems like I do, do yourself a favor and pick up an official Nintendo AC adapter. They go for $20-$25, but at least you get peace of mind. Also, if you own a PC try out an emulator and only play the real thing if you want the true nostalgic experience.
I didn't buy this item off Amazon, but all these generic adapters are one in the same. They usually come with two cords: one for the NES/SNES and another for the Sega Genesis. I'm not sure how they work for the Genesis, but use these for your Nintendo systems with caution. The part that plugs into your console doesn't fit properly. Now while it will  power the system, the SLIGHTEST movement of your console will cause a power surge. Since Nintendo controllers are obviously not wireless, this is very easy to do. This happened once and immediately froze the game. Luckily my system still works, but a surge like this could ruin it. Anyone who is a Nintendo collector knows NES/SNES/N64 and their games are rising in price and would rather not have to buy a new one. If you value your systems like I do, do yourself a favor and pick up an official Nintendo AC adapter. They go for $20-$25, but at least you get peace of mind. Also, if you own a PC try out an emulator and only play the real thing if you want the true nostalgic experience.