…This content is for 1-days, 7-days, 30-days, 90-day, 6 months, and 1year members only.Login Join Now Post navigationDELL XPS 15Z L521X LA-7851P BIOS TESTED/WORKING BIOS MAIN + EC ASHMOR20-6050A3365001-MB-A01(A1) BIOS 💯 % TESTED/WORKING OK