“No complaints with this adapter. I bought it to add an SSD to a Raspberry Pi 4 and it works fine for this. One thing to consider is that the cable is quite stiff, so if you want to fold it so that the SSD sits under the Pi, it will strain the cable/connectors.”
“With the USB3 option, this connector delivers blazing performance when connecting my spare "internal" SSD (it came out of a defunct laptop) to my Raspberry Pi 4. In this configuration the Pi provides all the power needed for the SSD.”