The Super Drives read and write CD's & DVD's
The Combo drive read and write CD's but only read DVD's
Here are several 7200 2.5" hard drives http://www.google.com/search?client=safari&rls=en&q=pata+hard+drive+%26+7200&ie=UTF-8&oe=UTF-8#sclient=psy-ab&hl=en&client=safari&rls=en&tbm=shop&source=hp&q=pata+%26+2.5%22+%26++hard+drive+%26+7200&pbx=1&oq=pata+%26+2.5%22+%26++hard+drive+%26+7200&aq=f&aqi=&aql=&gs_sm=s&gs_upl=25103l29593l0l32783l4l4l0l0l0l0l271l705l0.2.2l4l0&bav=on.2,or.r_gc.r_pw.,cf.osb&fp=df72f5a72f1b39f9&biw=1504&bih=931