Seagate ST9500421AS Momentus 7200 FDE.2 SATA Product Manual - Page 13
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 Serial ATA (SATA) Perpendicular 1,490k 265k 394 7,200 1.23 3.0 1:1 16 Mbytes 2.6 Physical characteristics Drive specification Height (mm) (inches) Width (mm) (inches) Length (mm) (inches) Typical weight ST9500426ASG, ST9500422AS, ST9500421AS ST9320427ASG, ST9320426ASG, ST9320426AS ST9250464ASG, ST9250414ASG, ST9250412AS and ST9250411AS 9.4 +/-0.2 0.371 +/-0.008 69.85 +/-0.25 2.750 +/-0.010 100.35 +0.20 / -0.25 3.951 +0.008 / -0.010 110 grams 0.238 pounds ST9160419ASG, ST9160418ASG and ST9160413AS 105 grams 0.227 pounds Momentus 7200 FDE.2 SATA Product Manual, Rev. B 7