Get from Amazon.com : http://www.amazon.com/gp/product/B00914JV56?tag=hawaiianlegac-20

500 GB 5400 RPM 8MB Cache Hard Disk Drive/HDD for HP Mini 110-1130SA 110-1130SL 110-1131DX

Interface SATA Capacity 500GB RPM 5400RPM Cache 8MB Size 25 Inchs
Package Include 500GB 5400RPM Hard Disk Drive
This Product Has 3 Years Warranty And 14 Days Money Back Guarantee