Abstract: The present disclosure relates to a holder for a tablet electronic device that comprises: a base member having a slot formed on the base member; and a main clamp including a stand mounted to the base member and extending upwardly and an arm arranged at one end of the stand and extending substantially perpendicularly from the stand. The arm comprises at least one flexible fastener protruding from a bottom of the arm. Further, a position of the at least one flexible fastener corresponds to a position of the slot.

Abstract: A tablet computer with a docking sled type arrangement including a payment device of choice is provided. The docking sled can be removed from the tablet computer to provide protection to the payment device. The docking sled employs magnetic force to hold and compress electronic contacts. These contacts provide charging power to the docking sled and bi-directional communication. The docking can be oriented left or right to accommodate both left handed and right handed users.

Abstract: A signal connector with elastic clamping plates and to-be-pressed-against posts for ensuring secure connection and watertightness includes a connector socket and a connector plug. The connector socket has a base insulating body provided with: plural base connection terminals, two to-be-pressed-against posts, and a longitudinal conical portion and plural transverse conical portions for dividing the base connection terminals into rows. The connector plug has a head insulating body provided with: plural head connection terminals, two elastic clamping plates, and a longitudinal insertion groove for accommodating the exposed head connection terminals and, when the connector socket and plug are connected, for accommodating the longitudinal and transverse conical portions, too.