Update;  It is a m2 drive, under the 2.5" ssd tray, which is empty, and allows for an additional drive to be added!...it came with a SK hynix SH920 mSATA 128GB, a HDD. An SSD would have been 5 stars. Other than that, the PC operates as expected and is in like new condition. The keyboard and mouse are basic plug in usb, and the usb wi-fi adapter works fine, but I will upgrade to a faster model. Overall, it should be fine for streaming, web browsing and e-mail. I may upgrade to a SSD.