The invention discloses an equipment securing device, an attachment-frame-internal storage equipment, a rack-mounted server device, and an equipment securing method. The present invention pertains to an equipment securing device for securing a cage-internal storage device such as a HDD carrier. The equipment securing device is equipped with: a panel mounted on the front surface of the equipment; an elastic securing member (23) provided on a first end part of the panel such that the tip end protrudes from the first end part of the panel; a handle (28), having a shaft at a second end part on the side opposite the first end part, and attached to the panel so as to be capable of rotating around the shaft, between a closed position which is a position along the extension direction of the panel, and an open position which is a position in a direction intersecting the panel; and an operating point member (27), the orientation of which changes in response to the rotation of the handle (28), and which is provided on the second end part of the handle such that the tip end protrudes from the second end part.