Acer Aspire 4739 Acer Aspire 4339 4739 4739Z Notebook Series Service Guide - Page 40

Hard Disk Drive (AVL components) (Continued) Item Specification Vendor & Model Name Hitachi HTS547564A9E384 Seagate ST9640320AS WD WD6400BEVT, WD6400BPVT TOSHIBA MK6459GSXP Hitachi Dummy P.N Seagate ST9750423AS WD WD7500BPVT TOSHIBA MK7559GSX Capacity (GB) 640 750 Bytes per sector 512 Data heads 4, 2, 4, 3, 4 N/A, 2, 3, 4 Drive Format Disks 2 N/A, 2, 2, 2 Spindle speed (RPM) 5400 Performance Specifications Buffer size 8MB Interface SATA Fast data transfer 3.0 rate (Gbits / sec, max) N/A, 3.0, 3.0, 3.0 Media data transfer rate (Mbytes/sec max) 996, 300, 97, 97, 584.5-1195.5 N/A, 300, 97, 584.5-1195.5 DC Power Requirements Voltage tolerance 5V ±5% 1-30 Hardware Specifications and Configurations