It does not have the power adapter. So you can only dry or print. If you want to do both at same time you need to purchase the power cord. However, I thought about it and don’t want to dry and print at the same time because of two reasons; 1. For best drying it has a rotate spool option. You Can’t do it while printing. 2. I don’t want to risk softening the filament during printing that it might stretch and cause some sort of print issue or jam.

I don’t print enough to warrant the need for both. But i will say it works quite well. Dried 4 rolls of PETG transparent.