MB.R5402.001 Acer System Board (Motherboard) Socket 989 for Aspire 5742G (Refurbished)
Acer Aspire 5742G original Battery 48Wh - sparepartworld.com
Amazon.com: GinTai DC Power Jack with Cable Socket Plug Charging Port Replacement for Acer Aspire 5742G-5464G32MICC PEW71 5742 5742G-7200 : Electronics