An electronic card connector includes a metal shell, a tray, a first terminal block, a second terminal block and a third terminal block. The metal shell is provided on a circuit board and cooperates with the circuit board to define a slot. The tray comprises an insulative body and a shielding unit. A first receiving groove of the insulative body receives a SD card and second and third receiving grooves of the insulative body respectively receive first and second SIM cards. The shielding unit is made of metal, provided in the insulative body and positioned between the first receiving groove and the second receiving groove and the third receiving groove, so as to shield the electromagnetic interference from the SD card.

A payment object reader configured to delay reading data of an integrated circuit payment object in the payment object slot of the payment object reader until the rest of the payment object reader is ready to read data off of the integrated circuit payment object. The payment object reader can be configured to include a microcontroller configured to monitor and manage the payment object contact switch and the integrated circuit payment object interface of the payment object slot of the payment object reader.

An electronic card connector includes a metal shell, a tray, a first terminal block, a second terminal block and a third terminal block. The metal shell is provided on a circuit board and cooperates with the circuit board to define a slot. The tray comprises an insulative body and a shielding unit. A first receiving groove of the insulative body receives a SD card and second and third receiving grooves of the insulative body respectively receive first and second SIM cards. The shielding unit is made of metal, provided in the insulative body and positioned between the first receiving groove and the second receiving groove and the third receiving groove, so as to shield the electromagnetic interference from the SD card.

A device includes a tray including first and second support plates and a body having first and second surfaces. A portion of the body electrically isolates the first support plate from the second support plate and a first recess is defined in the body. A circuit board includes first contacts positioned proximate the first recess.

A connecting method, apparatus of a screen transmission device based on NFC, and a computer device are provided. The connecting method of the screen transmission device based on NFC includes touching an NFC tag, and identifying whether the NFC tag contains network information of the screen transmission device; and when the NFC tag contains the network information of the screen transmission device, acquiring the network information, and connecting with the screen transmission device according to the network information.