Acer                       

http://www.acerpanam.com/synapse/homepage/view_public.cfm?edit_id=44&website=AcerPanAm.com/us

Biostar              

http://www.biostar-usa.com/servicemain.asp  

Foxconn                 

http://www.foxconnchannel.com/

Hitachi              

http://www.hitachigst.com/portal/site/en/menuitem.9d9c342d03880f8056fb11f0aac4f0a0/

Hyundai              

http://www.hyundaiq.com/USACentralRegion.asp

Maxtor

http://www.maxtor.com/portal/site/Maxtor/menuitem.ff4aba9b5a1543271400585760b46068/?channelpath=/en_us/Support/Warranty%20Services

Seagate             

http://support.seagate.com/customer/warranty_validation.jsp

Western Digital  

http://websupport.wdc.com/warranty/serialinput.asp?custtype=res&requesttype=warranty&lang=en