![Amazon.com: Western Digital 640GB 640 GB Hard Drive HDD 16MB Cache SATA II 3.0Gb/s WD6400AAKS: Computers & Accessories Amazon.com: Western Digital 640GB 640 GB Hard Drive HDD 16MB Cache SATA II 3.0Gb/s WD6400AAKS: Computers & Accessories](https://m.media-amazon.com/images/I/71RVptoQm8L._AC_SS450_.jpg)
Amazon.com: Western Digital 640GB 640 GB Hard Drive HDD 16MB Cache SATA II 3.0Gb/s WD6400AAKS: Computers & Accessories
![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://images-na.ssl-images-amazon.com/images/I/717YW0od0zS._AC_SY679_.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
![Western Digital Scorpio Blue WD6400BEVT 640GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5" Internal Notebook Hard Drive Bare Drive - Newegg.com Western Digital Scorpio Blue WD6400BEVT 640GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5" Internal Notebook Hard Drive Bare Drive - Newegg.com](https://c1.neweggimages.com/ProductImage/22-136-459-06.jpg)
Western Digital Scorpio Blue WD6400BEVT 640GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5" Internal Notebook Hard Drive Bare Drive - Newegg.com
![WD6400AACS-00G8B0 - Western Digital Caviar Blue 640GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive WD6400AACS-00G8B0 - Western Digital Caviar Blue 640GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive](https://harddiskdirect.com/media/amasty/amoptmobile/catalog/product/cache/8b3df2345e86c5269ef614787fcda95d/w/d/wd6400aacs-00g8b0.jpg)
WD6400AACS-00G8B0 - Western Digital Caviar Blue 640GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive
![Amazon.com: WD6400AACS-00G8B1 Western Digital 640GB 5400RPM SATA 3.0 Gbps 3.5 inch Caviar Hard Drive: Computers & Accessories Amazon.com: WD6400AACS-00G8B1 Western Digital 640GB 5400RPM SATA 3.0 Gbps 3.5 inch Caviar Hard Drive: Computers & Accessories](https://images-na.ssl-images-amazon.com/images/I/81qVwnTRzrL._AC_SY450_.jpg)
Amazon.com: WD6400AACS-00G8B1 Western Digital 640GB 5400RPM SATA 3.0 Gbps 3.5 inch Caviar Hard Drive: Computers & Accessories
![640GB, 2.5" SATA Hard Disk, 5,400rpm, 8M WD6400BPVT Western Digital WD6400BPVT HDD 2.5" SATA 620GB - 960GB. PcHub.com - Laptop parts , Laptop spares , Server parts & Automation 640GB, 2.5" SATA Hard Disk, 5,400rpm, 8M WD6400BPVT Western Digital WD6400BPVT HDD 2.5" SATA 620GB - 960GB. PcHub.com - Laptop parts , Laptop spares , Server parts & Automation](https://www.pchub.com/images/thumbs/0156148_Western-Digital-WD6400BPVT-HDD-2-5-SATA-620GB-960GB-WD6400BPVT-b-156148_550.jpeg)
640GB, 2.5" SATA Hard Disk, 5,400rpm, 8M WD6400BPVT Western Digital WD6400BPVT HDD 2.5" SATA 620GB - 960GB. PcHub.com - Laptop parts , Laptop spares , Server parts & Automation
WD6400AAKS-65A7B0 Western Digital 640GB 7200RPM SATA 3.0 Gbps 3.5 inch Caviar Hard Drive, Electronics, Computer Parts & Accessories on Carousell
![Western Digital Scorpio Blue WD6400BPVT 640GB 5400 RPM 8MB Cache 2.5" SATA 3.0Gb/s Internal Notebook Hard Drive - w/1 Year Warranty Western Digital Scorpio Blue WD6400BPVT 640GB 5400 RPM 8MB Cache 2.5" SATA 3.0Gb/s Internal Notebook Hard Drive - w/1 Year Warranty](https://cdn3.volusion.com/ovay6.hxgv9/v/vspfiles/photos/G02-0195-2.jpg?v-cache=1510162646)
Western Digital Scorpio Blue WD6400BPVT 640GB 5400 RPM 8MB Cache 2.5" SATA 3.0Gb/s Internal Notebook Hard Drive - w/1 Year Warranty
![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://images-na.ssl-images-amazon.com/images/I/51tNXsrfLlL._AC_.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 2JMYP WD6400BPVT-75HXZT1 2.5" SATA 640GB 5400 300 MB/s Western Digital Laptop Hard D: Electronics Amazon.com: Western Digital 2JMYP WD6400BPVT-75HXZT1 2.5" SATA 640GB 5400 300 MB/s Western Digital Laptop Hard D: Electronics](https://images-na.ssl-images-amazon.com/images/I/71w6Ph6gYEL._AC_SX355_.jpg)
Amazon.com: Western Digital 2JMYP WD6400BPVT-75HXZT1 2.5" SATA 640GB 5400 300 MB/s Western Digital Laptop Hard D: Electronics
![Western Digital Caviar Blue 640GB Internal 7200RPM 3.5" (WD6400AAKS-65A7B2) HDD for sale online | eBay Western Digital Caviar Blue 640GB Internal 7200RPM 3.5" (WD6400AAKS-65A7B2) HDD for sale online | eBay](https://i.ebayimg.com/images/g/JMEAAOSwsQJd1sV4/s-l640.jpg)