Abstract: A stem ejectable component assembly for electronic devices does not use a pin or needle to eject the tray holder. The assembly includes a receiving housing coupled to a SIM/MMC tray, a front plate, and a stem. The front plate incorporates slider pins that slide out to engage with recesses in the support frame of the electronic device to lock the assembly. The slider pins have inner ends that abut the stem and hold the stem in a pushed-in position. The slider pins also incorporate profiled protrusions that engage with ball pins fixed to the receiving housing. When the front plate is pushed inward, the profiled protrusions cause the slider pins to move outwards and release the stem to project out of the front plate. Pulling the stem causes the slider pins to slide in and disengage from the recesses in the support frame to enable withdrawal of the assembly.

Abstract: A rotary tray holder includes a tray holder comprising a side A and a side B, each side comprising at least one window to hold a SIM card; and a handle grabber that allows rotation of the tray holder to enable insertion of the tray holder in an electronic device with any of the side A and the side B of the tray holder, thereby enabling the SIM card located on the side oriented in the desired direction to be active, and making the SIM card located on the other side to take a standby position. The tray holder may include two partly overlapping windows oriented at an angle to each other. One of the overlapping windows holds the SIM card with contacts providing a standby position for the SIM card that may be repositioned in the other of the two overlapping windows to make the SIM card active.