M2637 Magnetic Disk Unit

The M2637 series, which began shipping in August 1993, was Fujitsu’s first series of 2.5-inch magnetic disk units. These products marked Fujitsu’s entry into the mobile market and became the foundation of the company’s future compact magnetic disk units. In terms of form factor, the M2637 offered a 17-millimeter profile that was slightly thinner than the 19-millimeter profile that was common at the time. Despite the thinner profile, it housed three disks with a total storage capacity of 240 MB.