Used Seagate Laptop Thin HDD ST500LM021 500GB 2.5" SATA III Laptop Hard Drive - Walmart.com
goHardDrive.com - Seagate Momentus Thin ST500LM021 500GB 7200RPM 32MB Cache (7mm) SATA III 6.0Gb/s 2.5" Laptop Thin Hard Drive - w/1 Year Warranty
ST500LM021-DELL - Refurbished - DELL / SEAGATE 500GB 7.2K RPM SATA III 2.5 INCH SMALL FORM FACTOR SFF LAPTOP THIN HDD ADVANCED FORMAT AF 6GB/S SATA3 HARD DRIVE
Seagate ST500LT012 Momentus Thin 5400.9 500GB 2.5-inch 7mm SATA Laptop