Acer TravelMate 250 TravelMate 240/250 Service Guide - Page 31

Hard Disk Drive Interface Item Specification Physical read/write heads 2/1/2 3/2/2 Disks 1/1/1 2/1/1 Spindle speed (RPM) 4200RPM Performance Specifications Buffer size 2MB 2MB Interface ATA-5 for other vendors /ATA-6 for HGST Data transfer rate (disk-buffer, Mbytes/ s) 19.4-37.1/350/245 22.1-42.8 for Hitachi/ 350 for HGST Data transfer, rate (host~buffer, Mbytes/ s) 100 MB/Sec DC Power Requirements Voltage tolerance 5 +/- 5% 2/2 1/1 2MB 19.4-37.1 for Hitachi/ 350 for HGST 4/3/4 2/2/2 2MB 22.1-42.8 for Hitachi/ 350 for HGST CD-ROM Interface Items Vendor & Model Name Performance Specification Transfer rate Access time (typ.) Rotation speed Data Buffer Capacity Interface Applicable disc format Loading mechanism Power Requirement Input Voltage Mitsumi SR-244W1 Specification Read Sustained: 1545~3600 KB/sec Programmed I/O: 16.7 MB/sec Max. (Mode 0~4) Multi-word DMA: 16.7 MB/sec Max. (Mode 0~2) Ultra DMA: 33.3MB/sec Max. Random: 115 ms Full Stroke: 250 ms 5136 rpm 128 KB IDE CD/CD-ROM(12cm,8cm), CD-R, CD-RW, CD-DA, CD-ROM (Mode 1, Mode2), CDROM XA (Mode 2, Form1 and Form 2), Photo CD (Single, Multi- session), Enhanced CD Drawer with soft eject and emergency eject hole +5V[DC]+/-5% DVD-ROM Interface Item Vendor & model name Performance Specification MKE SR-8177-BAA6 With CD Diskette Specification With DVD Diskette 22 TravelMate 240/ 250