Seagate ST9250412AS Momentus 7200.4 SATA Product Manual - Page 12
Recording and interface technology, Physical characteristics
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2.5 Recording and interface technology Interface Recording method Recording density BPI (bits/inch max) Track density TPI (tracks/inch max) Areal density (Gbits/inch2 max) Spindle speed (RPM) (± 0.2%) Maximum Internal transfer rate (Gbits/sec) I/O data-transfer rate (Gbits/sec max) Interleave Cache buffer 2.6 Physical characteristics Drive specification Height (mm) (inches) Width (mm) (inches) Length (mm) (inches) Typical weight ST9500420AS ST9500420ASG ST9320423AS ST9320423ASG ST9250410AS ST9250410ASG ST9160412AS ST9160412ASG ST9120410AS ST9120410ASG ST980412AS ST980412ASG 9.5 +/-0.2 0.370 +/-0.008 69.85 +/-0.25 2.750 +/-0.010 100.35 +0.20 / -0.25 3.951 +0.008 / -.010 110 grams 0.238 pounds 105 grams 0.227 pounds Serial ATA (SATA) Perpendicular 1490k 265k 394 7200 1.23 3.0 1:1 16 Mbytes (16,384 kbytes) 6 Momentus 7200.4 SATA Product Manual, Rev. C