![Amazon.com: Seagate Expansion 640 GB USB 2.0 Portable External Hard Drive ST906404EXA101-RK : Electronics Amazon.com: Seagate Expansion 640 GB USB 2.0 Portable External Hard Drive ST906404EXA101-RK : Electronics](https://m.media-amazon.com/images/I/61AK5IKzgfL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Seagate Expansion 640 GB USB 2.0 Portable External Hard Drive ST906404EXA101-RK : Electronics
![NeweggBusiness - Seagate Momentus 5400 ST9640320AS 640GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5" Internal Notebook Hard Drive Bare Drive NeweggBusiness - Seagate Momentus 5400 ST9640320AS 640GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5" Internal Notebook Hard Drive Bare Drive](https://c1.neweggimages.com/NeweggImage/productimage/22-148-527-02.jpg)
NeweggBusiness - Seagate Momentus 5400 ST9640320AS 640GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5" Internal Notebook Hard Drive Bare Drive
![Seagate ST3640323AS 640GB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive - Newegg.com Seagate ST3640323AS 640GB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive - Newegg.com](https://c1.neweggimages.com/productimage/nb640/22-148-335-01.jpg)
Seagate ST3640323AS 640GB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive - Newegg.com
![Best Buy: Seagate FreeAgent Go 640GB External USB 2.0 Portable Hard Drive Ruby Red ST906403FDA2E1-RK Best Buy: Seagate FreeAgent Go 640GB External USB 2.0 Portable Hard Drive Ruby Red ST906403FDA2E1-RK](https://pisces.bbystatic.com/image2/BestBuy_US/images/products/9420/9420254_ra.jpg)
Best Buy: Seagate FreeAgent Go 640GB External USB 2.0 Portable Hard Drive Ruby Red ST906403FDA2E1-RK
![ST640LM000 - Seagate ST640LM000 Momentus 640GB SATA 3Gb/s 5400RPM 8MB Cache 2.5-inch Internal Hard Drive - serverevolution.com ST640LM000 - Seagate ST640LM000 Momentus 640GB SATA 3Gb/s 5400RPM 8MB Cache 2.5-inch Internal Hard Drive - serverevolution.com](https://serverevolution.com/media/catalog/product/cache/64b96665759ec6608c35f87eedcf2f7b/s/t/st640lm000.jpg)
ST640LM000 - Seagate ST640LM000 Momentus 640GB SATA 3Gb/s 5400RPM 8MB Cache 2.5-inch Internal Hard Drive - serverevolution.com
![Amazon.com: Seagate Expansion 640 GB USB 2.0 Portable External Hard Drive ST906404EXA101-RK : Electronics Amazon.com: Seagate Expansion 640 GB USB 2.0 Portable External Hard Drive ST906404EXA101-RK : Electronics](https://m.media-amazon.com/images/I/61zDLB8D9VL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Seagate Expansion 640 GB USB 2.0 Portable External Hard Drive ST906404EXA101-RK : Electronics
![Best Buy: Seagate FreeAgent Go 640GB External USB 2.0 Portable Hard Drive Tuxedo Black ST906403FAA2E1-RK Best Buy: Seagate FreeAgent Go 640GB External USB 2.0 Portable Hard Drive Tuxedo Black ST906403FAA2E1-RK](https://pisces.bbystatic.com/image2/BestBuy_US/images/products/9420/9420325_ra.jpg)