![Seagate ST9640423AS 640GB 5400 RPM 16MB Cache SATA 2.5" Internal Notebook Hard Drive Bare Drive - Newegg.com Seagate ST9640423AS 640GB 5400 RPM 16MB Cache SATA 2.5" Internal Notebook Hard Drive Bare Drive - Newegg.com](https://c1.neweggimages.com/ProductImage/22-178-373-02.jpg)
Seagate ST9640423AS 640GB 5400 RPM 16MB Cache SATA 2.5" Internal Notebook Hard Drive Bare Drive - Newegg.com
![Amazon.com: Western Digital Caviar Blue 640 GB Bulk/OEM Hard Drive 3.5 Inch, 16 MB Cache, 7200 RPM SATA II WD6400AAKS : Electronics Amazon.com: Western Digital Caviar Blue 640 GB Bulk/OEM Hard Drive 3.5 Inch, 16 MB Cache, 7200 RPM SATA II WD6400AAKS : Electronics](https://m.media-amazon.com/images/I/717YW0od0zS._AC_UF894,1000_QL80_.jpg)
Amazon.com: Western Digital Caviar Blue 640 GB Bulk/OEM Hard Drive 3.5 Inch, 16 MB Cache, 7200 RPM SATA II WD6400AAKS : Electronics
![Amazon.com: Western Digital Caviar Blue 640 GB Bulk/OEM Hard Drive 3.5 Inch, 16 MB Cache, 7200 RPM SATA II WD6400AAKS : Electronics Amazon.com: Western Digital Caviar Blue 640 GB Bulk/OEM Hard Drive 3.5 Inch, 16 MB Cache, 7200 RPM SATA II WD6400AAKS : Electronics](https://m.media-amazon.com/images/I/51tNXsrfLlL._AC_UF350,350_QL80_.jpg)
Amazon.com: Western Digital Caviar Blue 640 GB Bulk/OEM Hard Drive 3.5 Inch, 16 MB Cache, 7200 RPM SATA II WD6400AAKS : Electronics
![Amazon.com: WD6400AAKS WESTERN DIGITAL 640GB 7200RPM SATA BUFFER 16MB 3.5INCH HARD DRIVE : Electronics Amazon.com: WD6400AAKS WESTERN DIGITAL 640GB 7200RPM SATA BUFFER 16MB 3.5INCH HARD DRIVE : Electronics](https://m.media-amazon.com/images/I/71kzYTDxHcL.jpg)
Amazon.com: WD6400AAKS WESTERN DIGITAL 640GB 7200RPM SATA BUFFER 16MB 3.5INCH HARD DRIVE : Electronics
![640GB, 2.5" SATA Hard Disk, 5,400rpm, 8M HM641JI Samsung HM641JI HDD 2.5" SATA 620GB - 960GB. PcHub.com - Laptop parts , Laptop spares , Server parts & Automation 640GB, 2.5" SATA Hard Disk, 5,400rpm, 8M HM641JI Samsung HM641JI HDD 2.5" SATA 620GB - 960GB. PcHub.com - Laptop parts , Laptop spares , Server parts & Automation](https://www.pchub.com/images/thumbs/0156151_Samsung-HM641JI-HDD-2-5-SATA-620GB-960GB-HM641JI-b-156151_550.jpeg)