Seagate External Desktop 1.5 TB,External,7200 RPM (ST315005EXA101-RK) Hard Drive
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Seagate External Desktop 1.5 TB,External,7200 RPM (ST315005EXA101-RK) Hard Drive

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  • Enclosure: External
  • Interface: USB 2.0
  • : HDD (Hard Disk Drive)
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Lots of data storage, Quick speeds, Easy-to-use - Seagate 1.5TB External Expansion Hard Drive

Pros Plug-and-play setup, Easy to use, Power management, Quiet
Cons Slight vibration and whirring noise at times
Recommended it? Yes
The Bottom Line:  If you want an external expansion drive for extra storage or data backup purchases, the Seagate 1.5 Terabyte External Expansion Drive is a good choice
As my computer has aged, the hard drive has been filling up with digital photos and music files.  In order to have extra room and to provide a backup for my important files, I started shopping for an external hard drive that could fill both needs.  I discovered the Seagate 1.5 Terabyte External Expansion Drive through a special offer at Staples.  It was actually slightly larger than what I was looking for, but at the price and when compared to other drives, I thought it would be a good choice.

I have discovered that it was a good choice.  The 1.5 terabytes of space gives me plenty of room to backup important files and move some of the larger files off my computer’s hard drive to this drive.  The read and write speeds are quick and the communication with my computer is as seamless as it is with my internal hard drive.  Overall I am very happy with the performance of this hard drive.


The Seagate 1.5 Terabyte External Expansion Drive is as the name suggests an external hard drive.  The drive has a heavy duty plastic case that is about five inches in width, a little over eight inches in length and about one and a half inches in thickness.  The drive weighs about two and half pounds.  I would say that it is small, but it does need a somewhat open area to sit.  I ended up placing it on the top of my desk where it can sit flat and is out of the way.   Unlike some older expansion drives I have had in the past, I do not find that this drive gets very hot, so while I have it in an open area, I think it would do okay in a more enclosed area.

The Drive comes with both a USB cable and a power adapter and cable.  Those two cords plug in the back of the drive.  The front of the drive features LED lights to indicate when the drive is powered on and when it is reading and writing.

When the drive is reading and writing there is a slight whirring noise that is audible at times. It seems to be most noticeable when the drive first powers up or you access a large file.  Otherwise the drive does not produce any other noise.  There is a slightly vibration to the drive when it is active, but it is not enough to produce noise or shake your desk.

The drive is a Plug and Play drive, which means that there is no software to install.  It turned out to be one of the easiest devices that I have added to my computer.  I simply found a place for it on my desk, plugged in the power, and then plugged the USB cord into my computer.  Within a few seconds the drive was recognized and I could move files back and forth to the drive.

The drive appears on your computer as an expansion drive in Windows Explorer.  You can simply drag and drop files to the drive or you can use it as a standard drive in programs and save your documents and files to it.

The read and write speeds seem on par with a USB flash drive and even with my regular hard drive.    The USB connection is fast and I have not noticed any lags when I’m streaming music or videos off the drive.  When I copy or backup large amounts of data to the drive, it is a quick and efficient process.

The drive has power management features.  It powers down when it is not actively being used and then powers back up as it is needed.  I have noticed a slight lag here as the drive comes back up to speed but for most applications, it is no noticeable.


I have been happy with the performance of the Seagate 1.5 Terabyte External Expansion Drive.  It was really easy to get going and since then, it has been working well both as a backup drive and as another standard storage drive for my computer.

There are several pluses for me with this drive.  The first is that the drive offers a ton of storage space.  I have put gigabytes of data on there and it has only filled a fraction of the drive.  Next, even though there is a bit of delay as it powers up, I appreciate the power-save feature of this drive.  Third this drive was easy to set up and subsequently use, all I had to do was plug in the USB cable and within a few minutes, I was already backing up files to the drive.  I like the low profile of the drive and the fact that it does not run as warmly as some previously external drives I have used.  Finally, I like the fact that this drive reads and writes almost as quickly as my internal hard drive – in my mind there is really no lost performance, which just makes the drive that much more useful.

Minuses are a bit harder for me to find.  The occasional whirring noise is not really that noticeable and only occurs occasionally.  The vibration of the unit is so slight that I have never noticed my desk or anything on it vibrating from it.  Otherwise I really do not have any complaints with this unit after several months of regular use.  Really the drive has worked as advertised.

I have seen this drive at a number of different price points.  It seems to average about $100, but I was able to get this drive with a coupon and a sale at Staples for $69, which I considered quite a deal considering smaller capacity drives were selling for the same price and was the main reason I went with an expansion drive of this size.

Final Thoughts

If you want an external expansion drive for extra storage or data backup purchases, the Seagate 1.5 Terabyte External Expansion Drive is a good choice.  I have had nothing but positive experiences with the drive since I set it up and started using it.

With 1.5 terabytes of space it can hold my music, videos and digital photographs with room to spare.  Setting up the drive was easy and using the drive is even easier.  Based on my experiences, I would not have a problem recommending this product to anyone looking for an external hard drive.

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