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Seagate USB 2.0 Portable External Hard Drive

Seagate Expansion 640 GB USB 2.0 Portable External Hard Drive ST906404EXA101-RK

by Seagate
4.3 out of 5 stars  See all reviews (139 customer reviews)

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Want it delivered Wednesday, September 8? Choose One-Day Shipping at checkout. Details

Frequently Bought Together

Capacity: 640 GB

Customers buy this item with Case Logic Compact Portable Hard Drive Case (Black) $10.31

Seagate Expansion 640 GB USB 2.0 Portable External Hard Drive ST906404EXA101-RK + Case Logic Compact Portable Hard Drive Case (Black)
Price For Both: $96.08

These items are shipped from and sold by different sellers. Show details


What Do Customers Ultimately Buy After Viewing This Item?

Capacity: 640 GB
Seagate Expansion 750 GB USB 2.0 Portable External Hard Drive ST907504EXA101-RK
45% buy
Seagate Expansion 750 GB USB 2.0 Portable External Hard Drive ST907504EXA101-RK 4.3 out of 5 stars (139)
$107.89
Seagate Expansion 640 GB USB 2.0 Portable External Hard Drive ST906404EXA101-RK
24% buy the item featured on this page:
Seagate Expansion 640 GB USB 2.0 Portable External Hard Drive ST906404EXA101-RK 4.3 out of 5 stars (139)
$85.77
Seagate Expansion 500 GB USB 2.0 Portable External Hard Drive ST905004EXA101-RK
10% buy
Seagate Expansion 500 GB USB 2.0 Portable External Hard Drive ST905004EXA101-RK 4.3 out of 5 stars (139)
$79.99

Technical Details

Capacity: 640 GB
  • The drive is powered from the USB cable, so there is no need for an external power supply.
  • Plus, it is automatically recognized by Window 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.
  See more technical details

Product Details

Capacity: 640 GB
  • Item Weight: 1 pounds
  • Shipping Weight: 1 pounds (View shipping rates and policies)
  • Shipping: Currently, item can be shipped only within the U.S.
  • ASIN: B002OJTR6I
  • Item model number: ST906404EXA101-RK
  • Average Customer Review: 4.3 out of 5 stars  See all reviews (139 customer reviews)
  • Amazon Bestsellers Rank: #1,023 in Electronics (See Top 100 in Electronics)
  • Date first available at Amazon.com: September 14, 2004

Product Description

Capacity: 640 GB

Product Description

640GB USB2.0 PORTABLE STORAGE

Buy This Product and Related Accessories

Seagate Expansion 640 GB USB 2.0 Portable External Hard Drive ST906404EXA101-RK
85.77
$103.99 $85.77
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Customer Reviews

Capacity: 640 GB
Average Customer Rating
4.3 out of 5 stars (139 customer reviews)
5 star:
 (89)
4 star:
 (24)
3 star:
 (8)
2 star:
 (8)
1 star:
 (10)
 
 
 
 
 
 
 
 
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Most Helpful Customer Reviews

 
260 of 270 people found the following review helpful:
5.0 out of 5 stars Well Worth the Money....Why? Read on......, February 17, 2010
By S. Devarakonda (Northern VA) - See all my reviews
(REAL NAME)   
Amazon Verified Purchase(What's this?)
UPDATES IN THE LAST PARA

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)

OR

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.

Size: Though it says 500GB, we get 465.35GB. And this is the case with most hard drives.

Speed: Forget about the specifics - it is FAST!!

Well worth your money, right!!!

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~UPDATE~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Many customers have asking me why the format process did not work for their Mac?

The reason is, I have a Mac version 10.4.1 and I clarified that in the review.I guess there are a few changes for 10.6.1 and I added that too. If your MAC OS does not fit the description, the best way to start is by finding out OS version of your MAC & then search online on how to format it OR take it to an apple store.

Basically, the STEPS on how to format remain the SAME. But you might find some different Volumes Format based on your OS version. Volume Format will change as new Operating Systems (OS) keep sprouting.

When I bought this drive, there was not a single review which spoke about MAC Compatibility, let alone the other issues. But I took the risk and bought it for $100 or so.

Also, if you compare other reviews vs. mine. My review does not speak about how many songs I have on my drive, who gifted me this, how my life has changed with the new drive, how my office folks like it, how it fits in my pocket although the it is a trouser from my high school.

No offense, they are good individually. What I mean is....one review answer about plug n play....another spoke about light weight (by how much they didnt say)...another complained SLEEP issue...But none answered MAC compatibility, Format, Weight etc

My review has even answered everything that can happen with this drive. (Except that "What will happen if it breaks down" :P )

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64 of 66 people found the following review helpful:
5.0 out of 5 stars Nice quite drive easy to use, December 18, 2009
By B. Hanna (Skiatook, OK) - See all my reviews
(REAL NAME)   
Amazon Verified Purchase(What's this?)
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 -
Quite 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

Cons-
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.
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65 of 68 people found the following review helpful:
5.0 out of 5 stars Perfect for Travel!, October 19, 2009
By World Travelista (Arizona, USA) - See all my reviews
Amazon Verified Purchase(What's this?)
I travel often and needed something portable that would hold all my photos, music, and also to be a good backup for my personal and business laptops.
This is the perfect size; it's small, lightweight and barely takes up any room.
Also it is a very quiet drive, I barely hear it.
Set-up was so easy I thought I was missing something. Ha! It's truly USB plug and play - -no need for any software or anything.
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Most Recent Customer Reviews

5.0 out of 5 stars Works Flawlessly
I personally bought this item (the 640 gig model) for simply backing up music and pictures. Upon arrival, I plugged it in via the USB cable and Windows 7 recognized it and opened... Read more
Published 1 day ago by D. Cruise

3.0 out of 5 stars It's very slow when it was idle for 10+ minutes
The drive it's as advertised and all you expect (small, easy to connect, decent transfer), but what I really don't like is the slow response after the PC has been idle for several... Read more
Published 4 days ago by Manuel Castro

1.0 out of 5 stars Either defective out of the box or needs a Y-Cable To Get Power
Tried this drive on four different machines out of the box - 3 Macs, 1 PC. Result was the same for all - power light came on, the drive was never recognized. Read more
Published 6 days ago by Nick Trojan

5.0 out of 5 stars Idiot-Proof
While I have techno-joy, my sister has techno-fear and needed a straightforward way to store her pictures, music, papers and what have you while I wasn't around. Read more
Published 6 days ago by Miho Toyha

5.0 out of 5 stars Great deal
Fast transfer speed, very compact and easy to use. Great price. Haven't owned it long enough to comment on reliability, but so far so good!
Published 7 days ago by Matt

4.0 out of 5 stars lots of storage space; some limitations
disclaimer: this isn't a thorough review; if that is what you seek, look elsewhere, grasshoppa. here i list some tweaks and quibbles. Read more
Published 10 days ago by hwoarang-goatman

2.0 out of 5 stars Not enough power without Y cable
I bought this item for my girlfriend. It arrived and I wanted to surprise her by adding a couple of her favorite songs on it. Read more
Published 10 days ago by KolosoK

5.0 out of 5 stars Does its Job
While I haven't yet put this drive through its full paces like my three WD drives, it handled several full image backups with sufficient speed. Read more
Published 13 days ago by Alexander

5.0 out of 5 stars Mac compatible
As per my usual expectations of Amazon, everything came on time, protectively packaged, and worked immediately but then I started to panic as I had not checked the format... Read more
Published 13 days ago by Mom to three boys

5.0 out of 5 stars Excellent product!
I like this product very much. We only need to connect it into the USB port, and that's it. Ready to use!. Zero noise, zero heat, perfect to fast backups. Read more
Published 13 days ago by RITZ

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