3.42 amps for a 3.95 amps power adapter?

"You should be able to use this adapter.

Current ratings on the PS are maximum allowable draw.

That is, you shouldn't connect a 3.95amp powersupply to a device that will pull 5 amps.

However, connecting a 5amp powersupply to a device that only needs 3 amps is fine (assuming the voltage ratings are the same).

Edit:

When selecting power supplies: Match the voltage exactly. You can use a power supply with a higher rating on current (amps) or total power (current * voltage, so directly related anyway).

Do not use a power supply with a lower current rating or power rating than the original."