Question 1

How long is the USB 3 cable that comes with this unit?

Accepted Answer

Sorry such a long delay in answering your query, health issues.

My cable 30" or 2.5 feet.

Question 2

are the 3 usb ports for charging only ? or can info be transferred ?

Accepted Answer

These are usb 3 ports for transferring data and charging.

Question 3

What does the Large Button on the front do? Is it an Eject Button or something else?

Accepted Answer

It is a "One-Touch Backup" (or OTB) button.  You'll need the driver/software to use this feature.  If you Google "Rosewill" and go to their website, then on the main page in the upper right-hand corner "Search" box type in "rx309" and hit enter, then hover over and click on product name under the image, the click on  the "Downloads" tab under the images, you will find the links to both the manual and the driver/software for this unit.  Good luck!

Question 4

Does this have a cloning  function?

Accepted Answer

So, not quite. You can only plug a single hard drive into this dock, which then connects to your computer.  if you want to clone your computer's hard drive to the drive that is plugged into the dock, you can definitely do that (via a third-party program like Macrium Reflect or something similar).  However, if you want to plug in two hard drives (one with content, and one blank) and clone one onto the other with a single button push, you'll need a different dock with two individual drive slots.  This dock does support a quick back-up function called One-Touch Backup (check out Rosewill's website for more information on OTB).  Hope this helps!

Question 5

Only USB1 will charge my iPhone5s or iPad. USB2 and USB3 will not. However, USB2 and USB3 will charge my Kindle. Does this meet the specs...or do I have a defective unit? Thanks.

Accepted Answer

Your issue isn't USB compatability (USB 3 is reverse compliant to 2, 1), but instead with the port Amperage availability. Devices such as the iPad draw 2.1A, but other devices may be rated much less. Typical ports meet a spec standard of ~1A, which is why you would have issues. This device does have a power supply, but it is rated at 2A (which likely includes powering the HDD. Unless your USB 3 port is well powered, my guess is this will not meet your needs.

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