Used Seagate Laptop Thin HDD ST500LM021 500GB 2.5" SATA III Laptop Hard Drive - Walmart.com
Seagate ST500LM021-1KJ152 500GB SATA 2.5" Laptop Thin Hard Drive HDD | eBay
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