The D4-320 is a device that uses a fast connection, USB3.2 Gen2, to move data quickly, up to 10 Gbps. This speed is double what its older version, the D4-300, could do. When you put in four hard drives, it can handle data at a speed of 1,016 MB every second. Even with just one hard drive, it's still really fast, reaching 510 MB/s. So, whether you use many hard drives at once or just one, the D4-320 works very well. This device can hold a lot of information. It can use up to four hard drives, either the regular kind or SSDs, and can hold as much as 96TB of data. That's a lot of space for all your important files.

It also comes with a special software called TerraMaster TPC Backupper for free. This software helps you save copies of your data from a Windows computer in a way that doesn't take up much space, so you don't have to worry about losing your important information. The D4-320 can add more storage to NAS devices too, which are used to store and share files over a network. This means it can help when you need more space for your files, offering more ways to keep your data safe and organized.

It's also easy to set up. The hard drives can be put in without needing any tools, and there's a special lock that snaps into place to keep the drives secure. You can install a drive in just 8 seconds.

The device is designed to keep itself cool without making a lot of noise. It has a smart fan that changes speed based on how hot the drives are, making sure they don't get too hot. It's also built to be quiet, making 50% less noise than older models, so it won't disturb you while you work.

The D4-320 is part of a series that includes other models too, like the D2-320 with 2 bays and the D6-320 with 6 bays. This series is made to meet the needs of different users, from people at home to small businesses, and it's available to buy all over the world.

For more details, you can check out the TerraMaster D4-320 on their website.
https://www.terra-master.com/global/products/homesoho-das/d4-320.html