I need to replace the harddrive on my Toshiba laptop. I noticed the harddrive has what I can only describe as fins instead of traditional pins for connection that I'm familiar with. The pics of the harddrives at Newegg all have pins for connection. Are those compatible with my laptop. Do I need to get an adapter or something? Also, there is an OEM Seagate drive that Newegg advertises to have 5 years warranty. I thought OEMs don't carry warranties? Is it advisable to buy OEM when it comes to harddrives?