Detail overview
  Samsung - M7e(enhanced)640 Gb 5400rpm 8mb Buffer 2.5inch Sata-ii Notebook Drive(mobile Storage). 
 Key Features : 
  Capacity : 640 Gb 
   Interface : Serial Ata-300(sata-ii) 
   Enclosure : Internal 
   Hdd Form Factor : 2.5inch 
   Spindle Speed : 5400 Rpm 
   Buffer Size : 8 Mb 
 Technical Features : 
   Data Transfer Rate : 300mb/s 
   Average Seek Time(typical) : 12 Ms 
 Physical Dimensions : 
   Height : 9.5 Mm. 
   Width :69.85 Mm. 
   Length : 100 Mm. 
   Weight : 105 G.