2014 Electronics Holiday Gift Guide
2 used & new from $55.00

Sell yours for a Gift Card
We'll buy it for up to $20.90
Learn More
Trade in now
Have one to sell? Sell on Amazon

Image Unavailable

Image not available for
  • Seagate Expansion 250 GB USB 2.0 Portable External Hard Drive ST902504EXA101-RK
  • Sorry, this item is not available in
  • Image not available
  • To view this video download Flash Player

Seagate Expansion 250 GB USB 2.0 Portable External Hard Drive ST902504EXA101-RK

by Seagate
| 21 answered questions

Available from these sellers.
250 GB
  • Plug n¿ play with no software to install
  • Simply drag-and-drop to save files
  • 5400 RPM performance, 250GB
  • Built-in power management ensures energy-efficient operation
  • USB 2.0 Powered
1 new from $119.00 1 used from $55.00

Technical Details

Capacity: 250 GB
  • Brand Name: Seagate
  • Model: ST902504EXA101-RK
  • Hard Disk Size: 250.0 GB

Product Details

Capacity: 250 GB
  • Product Dimensions: 6.5 x 5.2 x 1.9 inches ; 6.4 ounces
  • Shipping Weight: 7.2 ounces
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B001SJVU24
  • Item model number: ST902504EXA101-RK
  • Average Customer Review: 4.0 out of 5 stars  See all reviews (968 customer reviews)
  • Date first available at Amazon.com: February 18, 2009

Product Description

Capacity: 250 GB

Product Description

Seagate external portable drives are compact and perfect for on-the-go. Instantly add more storage space to your computer and take large files with you when you travel. Setup is straightforward, simply connect a single USB cable and you are ready to go. The drive is powered from the USB cable, so there is no need for an external power supply. Plus, it is automatically recognized by Windows® operating system, so there is no software to install and nothing to configure. Saving files is easy too, just drag-and-drop. It¿s not just easy to use, but it¿s fast and energy efficient too. Enjoy fast data transfer speed with USB 2.0 connectivity and 5400 RPM drive performance. Built-in power management ensures energy efficient operation. Seagate has delivered proven, reliable storage solutions for over 30 years. As of 2008, Seagate has shipped over one billion hard drives. Seagate continues to stand behind its quality by including a 1-year limited warranty.

From the Manufacturer

Seagate® External Portable Drive

From the Manufacturer
Portable storage doesn't get easier than this

Seagate® External Portable drives are ideal for people who want lots of storage they can take with them at a moment’s notice. They’re automatically recognized by Windows Vista and Windows XP—no software to install. And because they draw their power from your computer’s USB 2.0 port, all you have to do is plug in the single USB cable and you’re ready to go!

Simply drag and drop to save files. Fast USB 2.0 performance makes transferring large music and video collections quick and painless. Built-in power management ensures energy-efficient operation—a big advantage when you’re on the road away from a power outlet. And every Seagate Portable drive is backed by a 1-year limited warranty for peace of mind.

Storage Calculator*
  250GB 320GB 500GB
Hours of digital video 250 320 500
Number of 2-hour DVD movies 62 80 125
Number of digital photos 80,000 102,400 160,000
Hours of digital music 4165 5330 12,497

*Quantitative usage examples for various applications are for illustrative purposes. Actual quantities will vary based on various factors including file size, file format, features and application software.

Seagate External Desktop Drive
View Larger


  • Plug and play—no software to install
  • Simply drag and drop to save files
  • USB powered
  • Built-in power management ensures energy-efficient operation
  • 1-year limited warranty
  • Customer Reviews

    I will return this defective product and will never buy Seagate product!
    Very easy to use and no softwate is need it, just plug and play And works like a Champ!
    Angelino F. Sanchez
    This hard drive was an excellent way to back up my files in case my computer crashed.

    Most Helpful Customer Reviews

    237 of 239 people found the following review helpful By B. Hanna on December 18, 2009
    Size Name: 500 GB Verified Purchase
    ---update at end---

    I purchased this drive a few weeks ago and have been very pleased with it. The only junk it was the warranty registration program. Run it then delete it. Disk comes pre-formated for NTFS. I went ahead and did a quick format to get rid of the existing folders on it. The drive goes into standby mode after 5 minutes bye default. This is quickly remedied and set to your liking with free Seagate Manager program available on Seagates website. Also this program give you the ability to do backups, and computer syncs.

    Pros -
    Quiet drive
    very fast
    small and sleek
    no power supply needed
    only requires use of one usb port
    Simple/Custom Backups with Seagate Manager
    Sync Option with Seagate manager

    Goes into standby in 5 minutes by default. Easily changeable with Seagate Manager
    Case Logic Compact Portable Hard Drive Case listed as an option to purchase with this is TOO SMALL for this drive. This is an issue with Amazon not the drive itself.

    Overall I am very please with this drive I have used it on multiple laptops and pcs without issue. I would suggest this over the new WD essential drives that come pre-installed with a bunch of crapware.

    ------UPDATE--------- 12/17/2010
    First Google seagate freeagent download select the Seagate link then select Free Agent GO link. File name is FreeAgentCN.ZIP

    I have have used this drive for the last year still performs as well today as it did a year ago. This is still a great buy.
    9 Comments Was this review helpful to you? Yes No Sending feedback...
    Thank you for your feedback. If this review is inappropriate, please let us know.
    Sorry, we failed to record your vote. Please try again
    1,081 of 1,117 people found the following review helpful By DK on February 17, 2010
    Size Name: 500 GB Verified Purchase

    I have clarified a few things that other reviews had issues with and gave it a low rating.

    For Starters: Since I use Both Mac & PC, I can 1000% say that it works on both these operating systems.

    Some customers had issues with the drive going into sleep mode after 10 mins or so. Well, the copying process does not stop, just because the drive has gone into SLEEP mode.

    You can take this SLEEP feature off by:

    Process 1: Downloading a Free Seagate Manager program available on the Seagate website.
    (I did not do this, I used process 2, described next)


    Process 2: Formatting the drive and remove the pre-installed Seagate software. Then the drive will NOT go to SLEEP Mode.

    How to Format a Drive in Windows:
    Plug the Drive --> Go to My Computer --> Right click on the Seagate icon--> Click "Format"

    How to Format a Drive in Mac 10.4 or earlier:
    Open Macintosh HD --> Click Applications --> Click Utilities --> Open "Disk Utility" --> Select the Seagate disk listed on the Left Side --> Click "Erase" tab --> Choose Volume Format to "MS-DOS" (I chose this so that I can use it on Windows & Mac).

    (For the newer MAC 10.6.1 or later, I guess Format is : "Mac OS Extended (journaled)", as rightly pointed out to me by a learned customer IB...Thanks dude!)

    Design: Compact & Sleek. Little bigger than the iPhone, but lighter than the iPhone (8GB)

    Connection: NO A/C Power outlet needed. Only single USB port is needed, everything provided in the box. So you just take it out and plug it and use it.

    Compatibility: Both PC & Mac. Although on the box it says "FOR PC", it was detected by my MAC and will work with both.
    Read more ›
    84 Comments Was this review helpful to you? Yes No Sending feedback...
    Thank you for your feedback. If this review is inappropriate, please let us know.
    Sorry, we failed to record your vote. Please try again
    375 of 390 people found the following review helpful By Jeffrey Peterman on July 30, 2010
    Size Name: 640 GB Verified Purchase
    I bought this drive for three reasons:
    1. Large capacity in a small form factor,
    2. The ability to power/access it from a single USB port,
    3. It was on sale at Amazon for under $70.

    I started using it on my laptop when it arrived yesterday and was impressed: small, and it worked well with the short standard mini-USB cable. Then last night I plugged it in to my desktop and went to transfer over my 400 GB movie directory. It kept failing after about 10 seconds, at which time Windows 7 would report that I had just attached it. My first thought was it was due to the "sleep" utility, so I downloaded and installed the Free Agent tool from Seagate and set the timeout to Never. Didn't make any difference. I then used the test tool in the utility software and the it reported a drive failure at about 8%, and said I should contact Seagate for an RMA. All my other small external drives (except for an ancient 30 GB) need a splitter USB cable: one end connects to the drive and the two other ends connect to the PC, using the extra USB port for power. As I had nothing to loose, I gave one of those cables a try - it works fine. So, it appears that the drive needs more power than my PC can provide on a single USB cable.

    I'm tempted to send it back, but I'm off on vacation tomorrow and it is a perfect drive for that. I may contact Seagate when I get back - maybe my drive is bad?

    - - - - Update - - -
    It worked perfectly on my trip, and it was nice to have the space. I've now tried this drive on four PCs - my desktop, my father's desktop, and two laptops. It works fine with the single cable on all but my desktop.
    Read more ›
    22 Comments Was this review helpful to you? Yes No Sending feedback...
    Thank you for your feedback. If this review is inappropriate, please let us know.
    Sorry, we failed to record your vote. Please try again