can this device crack the mifare classic 4k full encryption card?

The Proxmark3 does work with Mifare Classic 4K cards. Please take a look at the command reference for commands you can use. https://github.com/Proxmark/proxmark3/wiki/commands

Where can I find assembly and software guides for this embedded system?

The Proxmark3 enclosure comes preassembled, so there is no assembly guide needed. You can find software guides on our blog as well as on the wiki and the Proxmark3 forum. Please see those links below. Blog: https://store.ryscc.com/blogs/news Wiki: https://github.com/Proxmark/proxmark3/wiki Forum: http://www.proxmark.org/forum/index.php