ikuai SATA to USB 3.0 Dual Bay Hard Drive Dock for 2.5"/3.5" SATA HDD SSD with SD TF Card Reader 2 USB 3.0 Port and Offline Clone Function External Hard Drive Docking Station (2X20TB and UASP Support)

Drives, once connected, are responsive and stable.The only issue is when you either remove or reseat a drive while a second drive is already seated. It is almost impossible to not nudge the second drive and disconnect it.I plan to buy a second one if I cannot find a reliable 4-or-5 drive bay, at a fair price.

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I'm NOT getting paid for this review and am referring to the model UASP DS02 Sata 3, 16TB HD support with TF/SD slots, 2x USB 3 slots and 2x 2.5inch/3.5 inch slots. Ordered on 10/2020. DO NOT BUY refurbished or used older models. Get the latest new version to BE on the SAFE side! I have several older clone/sata external drive enclosures that have served me well for years. I needed something to do more, be muich faster and after thorough research, I took a chance on this one. NO REGRETS!!! This unit does everything I need to do. YES - You can use two hard drives at the same time and they will each have their own drive assigned letter. You can transfer ANY files from the computer to any of the two drives with ease. The 2.5 inch drive slips right into the slot easily and it has a spring loaded cover for the larger 3.5 inch drives. It makes the unit look really nice and helps keep the dust out. The POWER supply is 3 Amps and I'm using it to handle 1 USB 3 memory stick with 2 Sata 3.5 inch drives and a TF card at the same time!!! You can also easily transfer ANY files from the two hard drives to the USB stick and vice versa with one click. However, YOU CAN'T transfer a file to the TF\SD card unless you take out the USB stick. Once the USB stick is removed, you then have full access to the TF\SD card. This puppy is very fast, however, a few times a file seems to transfer slow. Hard drive to hard drive all files are super fast, but on very few rare occasions a hard drive to USB 3 transfer seems to slow down. I copy most movies which are 2 GB a piece and its super fast, just know that making multiple copies onto ANY USB drive will be severely slow down big time due to its design. Any multiple copies on a USB stick whatever the version will all come to a crawl. If you simply copy one file at a time, it will be like warp speed. I am using this to backup my movies and games onto a 4TB 3.5 inch drive and to USB 3 memory stick and again, its lightning fast. The TF/SD card slots are just a bonus and like icing on the cake makes this an ultimate unit. The power supply has 3 amps and more than enough juice to run everything. I have not tested "OLDER" drives that may require more power but in that case, use a heavier amperage power supply. It also comes with a beefy thick USB 3.0 cord that seems to be 3 foot long that attaches to your computer. It comes with a nice manual, small footprint but still readable and very informative with colored diagrams and troubleshooting. 1 Year warranty. I had two 4TB hard drives and a USB stick powered up for many hours and the hard drives are lightly warm. They never get hot and this unit has enough clearance to keep those drives cool. It says that everything is "HOT SWAPPABLE." Thats true and it is but honestly that is a FOOLS way of working with this. BE SMART - DO IT RIGHT - ALWAYS use the dismount the drives FIRST, then shut the unit off with the easy click on/off button on the back TO SAVE PROPERLY and not have ANY chances of corrupting your files or DAMAGINGING

Quality was good.

Unit worked perfectly right out of the box & recovered data from an HDD & SSD taken out of a computer that had suffered a motherboard failure. Was as easy to use as any other USB device.