Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: what speed are the drives and can I swap them out for new ones?
Document: Three calls to tech support indicated that if the fuse was blown, they would only replace the drive and that there was nothing that could be done for data because the drives are built in a way where you can't get the data in the event of a power failure!While I am fine with returning it and getting a new drive, the drive has over half a million images taken from 2010 - 2013 and our thought is that the data is fine, the drive power fuse is blown/and no longer good.
Fast, easy to set up and looks great with my Mac. Doesn't come with a bunch of junk preprogrammed like some of the WD. Not that I am down playing WD I think they make fine hardware but G-Tech is far more superior. I have two of these, great primary and back-up drives for all my photography. I would recommend to everyone especially if you have a Mac
I went to back up what I had and did a comparison (2.5 days!) between drives. Half of the files had errors.I would like to point out that my negative review is partially because of the unit, but also because of the company's policy (of lack thereof) for repairs outside of warranty. I called up G-Tech and asked about the noises; I was told the unit was about to fail.
I bought this G-Tech hard drive for time machine back-up with an iMac using a USB 3.0 connection. I have bought G-Tech drives for a number of years and for the most part been satisfied (although they seem to work better with firewire than USB 3.0 in my experience). This drive however, although still working, makes very loud and continuous &#34;clicking&#34; noises when turned on and engaged with my iMac.
This has become my favorite brand of drive. We've used them for years in editing with both Avid and FCP and have yet to experience a failure. The construction is robust, and the external power blocks continue to shrink. I wish the Thunderbolt version weren't twice as expensive, but I presume that will get better with time.In summary, these are incredibly reliable drives, fast and tough. I see their value in high demand applications, as well as serving as reliable archives for personal documents and memories.
It failed less than one week after we bought it and had to be returned. This has not been true with other G-tech drives in the past.
Many other storage devices have a safe way to getting power to the device, however  G-Tech Raid Drives simply doesn't have an option.
Previous models of this type of drives came with 4 possibilities for connectivity, including eSata. Current models offer USB 3.0 instead of eSata. For video editors working with HD assets, this is not good news!
I've been using G-Raid drives for the past 6 years professionally for video and visual effects work with only one power supply going bad (Which G-Tech promptly replaced). This was the first drive that exhibited random dismounting and sometimes refused to mount all together via USB 3.0.
As a small wedding photography business in the DC Metro area that does excess of 70 weddings yearly, we entrusted G-Technology to be rock solid. However, one of the basic requirements for a harddrive is non-existent on these devices. The way these drives are built is IF the power supply/fuse is blown, there is no way to retrieve your data because you can't get to your data.
Answer: Their website indicates that there are a pair of SATA III 7200 drives in the product.  I don't know about swapping them out for other drives.