Pros: This docking station arrived promptly, decently packed and in apparent good condition. It does look sharp, and seems to do its job well. Have tried the drive clone function, following the manufacturer's guidance as written by using larger "target" drives. Source drive was a 2.5" WD 320 Gig, configured as an NTFS boot drive with two partitions (my backup for an auxiliary system). Both target drives were 3.5" HGST, one 3Tb, the other 4Tb. Both were "refurbs" bought thru Newegg and verified upon arrival using WD's Data-lifeguard software, and initiated as GPT drives. Both clones appeared to run as intended, except that the created partitions on the target drives were NTFS, not GPT. Thus, the full capacities of the target drives were not recognized by the system (W7 Ultimate). I reset to GPT using Acronis DD-12 without any difficulty. The clone partitions were identical in size to the originals. Have not yet had a chance to verify the bootability of the target images on actual hardware, but the boot image does show as bootable according to the Acronis DD-12. I sampled a few files from the data partition to verify readability without any problems Obviously, this thing can save a big chunk of time and aggravation, provided the user is careful to follow correct procedure (see cons).

Cons: It's important to note that the clone function DOES NOT WORK if the unit is USB-connected to a computer; it's strictly a stand-alone item when cloning. To initiate cloning, insert the source drive in the rear (power-plug side) slot and the target (larger capacity) drive in the front slot. Power up the unit and observe that the "source" and "target" lights will flash several times. When both are steady, press the red button and hold until both source and target lights start flashing. Release button, then IMMEDIATELY press button a second time to initiate the cloning process. Do this while the source and target lights are still flashing! If you wait 'till they stop, the cloning process will not initiate when you press again, you'll only get the steady lights as before. Note that the manufacturer's instructions are unclear on correct procedure here. If you do it right, the 25% status light will start flashing and you're on your way. Also, some reviewers have complained about the status telltale lights being either "on" or "off" at the completion of cloning. Actually, either condition will occur, depending on when you look. At completion, the 100% lights will be steady "on" for a short period, after which all lights except power go "off." Job is complete and unit can be powered "off" at any time after the 100% status lights become steady. Note well that there are no razzle-dazzle options such as re-sizing partitions, insertion of uncommitted space, etc. This is strictly plain-vanilla duplication; you need a decent drive-configuration software package to do more.

Overall Review: Recommended for personal/small systems use as a drive cloner/dual drive cradle up to 8 Tb per slot. Would definitely buy again.

Pros: Excellent design including aesthetics right down to the anti-skid feet. Firm solid presentation on the desk. Houses dual 3.5" drives well and firmly. The 2.5" thin drives fit nicely as well. The unit readily accepted drives from Linux format into a Windows 10 environment for subsequent re-format. Formatting a 4TB drive to considerable time. Working with tens of thousands of JPGs at a time is quite reasonable. The supplied USB cable is very robust.

Cons: It still takes quite a long time to format a 4TB drive regardless of the interface.

Overall Review: It's been quite a while since I've encountered such a well built, well packaged, and well performing device.

Pros: The Offline Clone function worked perfectly. I recently purchased this Wavlink Docking Station to see if I could recover my data from a 1TB Seagate Barracuda HDD that would not boot. The drive was becoming erratic and suddenly would not boot into Windows 10. The HDD was partitioned into C: Windows, D: Programs, E: Cab Files and F: Data. I first reinstalled Windows and got halfway through re-installing all my applications when the Seagate drive failed again and would not boot. I decided to order the Wavlink to see if it would clone the whole system onto a new HDD using the Offline Clone function. The Wavlink arrived quickly in perfect condition. I put the failed drive into the Source slot and the failed drive into the Target and lauched the Offline Clone function. The manual instructions weren't the best I've seen, but I was able to figure it out without too much effort. The failed Windows partition and all the others were copied perfectly onto the new target HDD. I reinstalled Windows on the new drive and reinstalled my programs. Having the data and cab files on the new drive made the reinstall much easier.

Cons: The manual could be improved.

Overall Review: Based on my first experience I would definitely recommend the Wavlink for both emergencies and as a backup drive.

Pros: -Dual Docks means having either two mounted drives AND you can duplicate a drive without the use of a PC. -USB 3.0 speeds are great, especially when you are transferring large amounts of data.

Cons: When mounting a single drive and then adding a second drive, windows unmounts the single before mounting both. Not really a big issue, just a minor annoyance.

Pros: So far, I have upgraded two computers to SSD's by cloning their old HDD's using the unit as a stand-alone device. Plug them in, hit the button, walk away, and come back to a "brand-new" fully functional SSD...couldn't be easier.

Cons: A tad light on instructions. There's not much explanation as to other functions of the device.

Overall Review: There may be a way to do this, again referring to the previous "con", but it seems that there should be a way to clone a large HDD (source) that only has a small amount of data onto a smaller (target) drive, but one with adequate space for everything on the original (source) drive. I can't find how to do this. Also, it seems that the cloning will not start if there's any data already on the target drive, no matter how little there is. There should be a way to wipe the target drive first. Maybe there is, but the tiny two page "instruction manual" doesn't cover that. I'll go to the WaveLink website, if there IS one, and see if I can get my questions answered.

Pros: allows you to clone a drive without a PC

Cons: 75% Led light stuck on

Overall Review: I had issues with my product but Wavlink promptly reached out to me to resolve the issue. They were very reasonable and we came to a resolution that worked for everyone. Excellent service

Pros: Easy and fast cloning of a drive when you need to go a larger capacity drive, no need for a computer. It is inexpensive enough, you want to have one on the shelf for when you need it.

Cons: Instructions are a bit sparse, but if I can figure out how to do the cloning, you should be able to as well. The instructions don't mention this, but if your target drive is a larger capacity than the source drive, you will need to resize the resulting volume to utilize the extra space.

Overall Review: I cloned my wife's older 32Gb SSD to a much larger drive. The cloning took 5 minutes, I guess, 15 minutes total from the time I opened the case till I closed it up again. It booted up without any problem, except it only showed the 32Gb of the original drive. Duh! It is a clone, what was I expecting? A quick search pointed me in the right direction: go into the OS under storage and resize the volume to utilize the entire drive.

Pros: Easy operation, fairly quick cloning.

Cons: Instructions could be clearer, reads like electronic translation from Chinese to English

Overall Review: I bought me one because my brother had one and I saw what it could do. My brother needed to clone his wife's laptop hard drive to a Samsung SSD. For some reason the Samsung Cloning software wouldn't even install. Other software's said it had too many partitions. So he bought the Wavelink ST334U. Was able to clone his wife's Dell drive to the SSD perfectly. He had a old Dell desktop with vista on it that belonged to a friend. It would only boot to the bios showing hard drive error. He removed the hard drive(2007 date) and tried to recover the files to another computer with an external usb adapter made for hard drives. It would not read it or lock the other computer up plus it was making a clicking sound like the"click of death" .My brothers Wife said 'Why don;t you try it in the Wavelink". He had a spare empty drive and set it up to clone the "clicker" and the next morning he checked the spare drive and was able to see all the files! I was amazed so I ordered one for me.