A:Answer This is a single drive, seems to work fine. Transfer speeds of connected flash or portable drives are not the same as when connected to the computer separately, but you have the 2 built-in ports, which allows you to keep this connected at all times. Most portable drives have their own cables, if not you can buy at BestBuy or Amazon, especially the USB-C to USB-A. I’ve owned about 5-6 of these from 4TB to 6 to 8 to 10, they’re reliable and quiet. I had a 6TB fail on me, but these are mechanical devices, it happens. Mine are on 24/7 duty, and I usually replace them after 4-5 years without waiting for trouble, as the storage needs increase. For me these are for back-up purposes. As usual you should NEVER use just ONE drive to store files, because failure can be disastrous. If you use a Mac you reformat to HFS or whatever is needed, and vice-versa. Drive comes pre-formatted as NTFS and has its own utilities but I use my own separate backup program.
