Aiseesoft offers a free trial version that allows you to download the software and test if it can detect and connect to your device before purchasing. How to Get a Legitimate Registration Code
If you have previously purchased the software but cannot find your key, do not look for a "free" code. Use these official retrieval methods instead:
Aiseesoft-XXXX-XXXX-XXXX-XXXX (Please note that this code is subject to change and may not work in the future.)