same motherboard Acer you can try https://vinafix.com/threads/acer-veriton-m6620g-bios-q77h2-am.25033/ BIOS - Acer Veriton M6620G BIOS Q77H2-AM Acer Veriton M6620G BIOS P21-A0 vinafix.com
yes board manuacture acer but copy right dell this board install in dell vostoro 230 part number q77h2-am and service tag is HN7ZRL1
this is my pc service tag (HN7ZRL1)u go to dell side then check my product detail there show vostro 230 thanks