1/2 Brief Specification Mobile HDD (2.5-type) MJA2500BH / MJA2400BH / MJA2320BH / MJA2250BH ITEM MJA2500BH MJA2400BH MJA2320BH Basic specification Interface Formatted Capacity Bytes per sector ATA8-ACS ATA8-ACS ATA8-ACS Serial-ATA Revision 2.6 Serial-ATA Revision 2.6 Serial-ATA Revision 2.6 (Gen1i and Gen2i) (Gen1i and Gen2i) (Gen1i and Gen2i) 500GB 400GB 320GB 512 512 512 Performance Buffer size Rotation speed Average Latency time 8MB 8MB 8MB 5,400rpm 5,400rpm 5,400rpm 5.56ms (typ.) 5.56ms (typ.) 5.56ms (typ.) Average seek time (read) 12ms (typ.) 12ms (typ.) 12ms (typ.) Average seek time (write) 14ms (typ.) 14ms (typ.) 14ms (typ.) 5V±5% 5V±5% 5V±5% Start 5.0W (max.) 5.0W (max.) 5.0W (max.) Read/Write (1.5Gb/s) 1.3W (typ.) 1.3W (typ.) 1.3W (typ.) Read/Write (3.0Gb/s) 1.4W (typ.) 1.4W (typ.) 1.4W (typ.) Low power Idle 0.60W (typ.) 0.60W (typ.) 0.60W (typ.) Stand-by 0.13W (typ.) 0.13W (typ.) 0.13W (typ.) Sleep 0.13W (typ.) 0.13W (typ.) 0.13W (typ.) 0.0012 0.0015 0.0019 e e e Supply Voltage Allowable Voltage Power consumption Energy Consumption Efficiency /Category name Dimension Height 9.5mm 9.5mm 9.5mm Width 70.0mm 70.0mm 70.0mm Depth 100.0mm 100.0mm 100.0mm Weight 101g 101g 101g Temperature Operating 5 to 55°C 5 to 55°C 5 to 55°C -40 to 65°C -40 to 65°C -40 to 65°C Vibration (op) 9.8m/s2 (1.0G) [5～500Hz] 9.8m/s2 (1.0G) [5～500Hz] 9.8m/s2 (1.0G) [5～500Hz] Vibration (non-op) 49m/s2 (5.0G) [5～500Hz] 49m/s2 (5.0G) [5～500Hz] 49m/s2 (5.0G) [5～500Hz] Shock (op) 3,430m/s2 (350G) [2ms] 3,430m/s2 (350G) [2ms] 3,430m/s2 (350G) [2ms] Shock (non-op) 8,820m/s2 (900G) [1ms] 8,820m/s2 (900G) [1ms] 8,820m/s2 (900G) [1ms] Non-Operating Vibration/Shock Acoustics Idle (ave.) 2.4Bels 2.4Bels 2.4Bels *Energy Consumption Efficiency: Energy consumption efficiency is calculated based on power consumption divided by formatted capacity, as defined by Japanese law. *Energy Consumption Efficiency Category name is based on the Standards of Judgment for Factories etc. on the Low Concerning the Rational Use of Energy in Japan, as of FY2007. *Definition of Capacity: TOSHIBA defines a megabyte(MB) as 1,000,000bytes, and a gigabyte(GB) as 1,000,000,000 bytes. 2/2 ITEM MJA2250BH Basic specification ATA8-ACS Interface Serial-ATA Revision 2.6 (Gen1i and Gen2i) Formatted Capacity Bytes per sector Performance Buffer size Rotation speed Average Latency time 250GB 512 8MB 5,400rpm 5.56ms (typ.) Average seek time (read) 12ms (typ.) Average seek time (write) Supply Voltage 14ms (typ.) Allowable Voltage 5V±5% Power consumption Start 5.0W (max.) Read/Write (1.5Gb/s) 1.3W (typ.) Read/Write (3.0Gb/s) 1.4W (typ.) Low power Idle 0.60W (typ.) Stand-by 0.13W (typ.) Sleep 0.13W (typ.) Energy Consumption Efficiency /Category name Dimension 0.0024 d Height 9.5mm Width 70.0mm Depth 100.0mm Weight Temperature Operating Non-Operating Vibration/Shock 96g 5 to 55°C -40 to 65°C Vibration (op) 9.8m/s2 (1.0G) [5～500Hz] Vibration (non-op) 49m/s2 (5.0G) [5～500Hz] Shock (op) 3,430m/s2 (350G) [2ms] Shock (non-op) 8,820m/s2 (900G) [1ms] Acoustics 2.0Bels Idle (ave.) *Energy Consumption Efficiency: Energy consumption efficiency is calculated based on power consumption divided by formatted capacity, as defined by Japanese law. *Energy Consumption Efficiency Category name is based on the Standards of Judgment for Factories etc. on the Low Concerning the Rational Use of Energy in Japan, as of FY2007. *Definition of Capacity: TOSHIBA defines a megabyte(MB) as 1,000,000bytes, and a gigabyte(GB) as 1,000,000,000 bytes.