As Coin-Keeper has suggested... importing your Master PUBLIC Key into Electrum is a relatively painless and safe way to check your addresses...

Just download Electrum from here: https://electrum.org/#download

Then create a "new" wallet -> Standard Wallet -> Use a hardware Device -> Connect the ledger then follow the prompts...

After it has created your addresses and opened the wallet, you can view the addresses using "View -> Show Addresses" and then click on the "Addresses" Tab... your Output #2 address should be showing under "Change" (Note: you may need to click the '>' symbol to get the Change section to expand)

My first post, new member...
Two days ago I tried to buy into the cloud mining pool Hashflare. When I tried to purchase with Bitcoin (held in my ledger Nano S) I noticed something strange. My device was asking me to confirm "output #1" with the correct btc amount and address (i thought this strange, as I've never seen "output #1" before when moving btc, but because the amount and address we're correct I confirmed the transaction. Then right after the device said "output #2" (very scary) with a btc amount equal to what would be the remaining amount in my account and the address was not known to me. I did rejected that confirmation and the entire order failed. Now anytime I try to move bitcoin from my ledger Nano S for any purchase this same sequence happens. I am not able to move btc without any remaining funds being attempted to be sent to an unknown address. I tried to move all my Bitcoin to a new account within the wallet, but each attempt fails. I have not tried to move my other coins (Bitcoin Cash and Ethereum) but fear the same thing may occur. I sent an email to Hashflare and to Ledger but responses will be 1-3 weeks.
Possible solutions?
My only thought and plan at the moment is to order a Trezor and move all but a very small amount over from the Ledger to the Trezor and allow the tiny amount that I don't send over go through to the unknown address. Good idea? I already bought a Trezor and it is on the way.