[TechniSol]

Uh, Endless... 5V was explicitly stated by the OP.

What I should have said is that as a general rule for any adapter as long as current rating for the adapter meets or exceeds the device's requirements you should be fine. You still need to be careful of making sure it supplies AC or DC as required, and that the correct voltage and polarity are observed.

Obviously, if it's rated 5vdc and has a USB type connector and follows that standard it should work for most devices. With USB even if the device can benefit from a higher current adapter it'll usually still work, but charge more slowly -though in some cases an adapter capable of only providing less current than the device draws, or can draw, may heat up. Check it periodically if unsure. Better safe than sorry and best to always use an adapter rated at least for the same current as the device -it only takes seconds to google a device's requirements if unmarked. It takes a lot longer to build a new home if an adapter is undersized, unfused as most are, and burns your home down -though odds are the adapter just burns out, depending on the design an internal voltage regulator could pop and ruin your device too, so be careful!