Mobile hard disk mainly refers to a small and portable hard disk memory that can be plugged in and out at any time using USB or IEEE 1394 interface and can transmit data with the system at high speed. On the products with USB 1. 1 interface specification, the patience of users will be tested when transmitting a large amount of data.
Mobile hard disk is mainly composed of shell, circuit board (including control chip, data and power interface) and hard disk. The shell is generally made of aluminum alloy or plastic, which has the functions of compression resistance, earthquake resistance, anti-static, anti-fall, moisture resistance and heat dissipation.
The control chip controls the reading and writing performance of the mobile hard disk; Common data interfaces are USB and IEEE 1394. Considering the size, shock resistance, power consumption and energy saving, a 2.5-inch notebook hard disk is usually selected.