UGREEN USB 3.0 to SATA HDD Converter

I have a UGREEN USB 3.0 to SATA HDD converter. Actually, it is not just for HDD, SSD is also OK. I think it should be named as a USB 3.0 to SATA adapter.

Let me check the specification:

• Support speed up to 5Gbps
• SATA III standard, backward compatible with SATA II and SATA I
• USB 3.0, backward compatible with USB 2.0/1.1
• Support 2.5″/3.5″ SATA HDD/SSD (DC 12V power required for 3.5″ HDD)
• Plug & play, hot-swapping

It said hot-swapping was supported, to protect my SSD, I did not test it.

Here is one Crucial 2.5″ SSD connected to the adapter. The other side is a USB 3.0.

The basic test is just to copy a file from SSD to my desktop through this adapter. Then copy it back to a folder of the SSD.

It is about 42MB/s.

Copy file from desktop to SSD is about 35MB/s.

As per my knowledge, I feel it should not be so slow. I did the test above when I connect the USB to the front USB port of my PC.

Now I am going to connect it directly to the back panel of the PC. The port on the motherboard.

See, the speed is about 335MB/s from SSD to desktop PC.

The speed from PC to SSD is also about 300MB/s most of the time. Until it reached 2GB of data transferred, the speed falls to 54MB/s.  I think the cache size is about 2GB for Crucial BX200 240GB SSD.

This Crucial BX200 SSD was installed six years ago on a laptop that my daughter used. Now she has a new gaming laptop. So I took it down and do the test.

Using it as an external driver to save some files for portable use is good idea.