Review on SocketTech 3-in-1 SD Card Reader: USB 3.0 Memory Card Reader & Micro SD to USB Adapter for Samsung Galaxy/Note, Android, MacBook, Windows, Dash Cam by Jon Dugan

Transferring 1.2 GB 5 minutes .MOV video from microSD to Samsung Galaxy S9: 60 seconds. Transferring 56MB 4 minutes .MP4 video from S9 to microSD: 3 seconds. Excellent! Transferring 13MB 30min .mp3 audio from USB to S9: 2 seconds. Brilliant! All five slots tested: Galaxy S9, microSD, SD and USB "mother" worked well! The male USB port didn't work for me. Like: Oooh! There are two LEDs! To notify which end is actively connected. And a little strap. Dislikes: 1) The USB plug doesn't work for me. I inserted my SD card into the product and the product into my computer. The computer just hung forever and never read my SD card. (Good thing my computer has its own SD card slot anyway.) - Also, I didn't want to test the product's USB port to connect my desktop PC to my S9 as that would be ridiculous. 2) There is no thread to grip the product, nor two of its caps. Because my fingers were dry and cold, I had to press harder to separate them. 3) I don't know if it was my phone or a product. During the second or third test of this product after repeatedly disconnecting the product (with my microSD card) from the S9. S9 no longer reads SD. I've wiped the phone's storage multiple times and tried repeatedly to mount it again. Nothing. So I deactivated the product, removed the SD from the product and restarted the phone. My phone restarted for a minute longer than usual. Strange. But after some patience, the S9 finally completed the restart. And now S9 reads USB perfectly. And now the S9 will reboot as usual in about 30 seconds and read the SD through the product as usual. Luckily the product didn't mess up my phone. 4) The box is not designed to be opened easily.