If multiple game cartridges cannot be read then replacing the game reader slot may be the solution, this part may also be used to repair issues with Audio jack socket, Micro SD reader for Switch OLED, NEW and GENUINE from OEM Factory that has never been used, NOT a PULLED parts. This replacement consists of (1)x Game card cartridge, (1)x Micro SD slot, (1)x Audio Jack socket, connect the cable connector to the system-board assembly and close the latch to secure the cable. Compatible with Switch OLED console, NOT FIT for Switch & Switch Lite. You will receive: 1x Game Card Reader Cartridge Daughter board (Part Numbers: HEG-SUB-001)