Lenovo Premier Support Plus Upgrade - Extended service agreement - parts and labour (for system with 1 year on-site warranty) - 1 year (from original purchase date of the equipment) - on-site - response time: NBD - for ThinkPad L13 Gen 4, L13 Yoga Gen 4, L15 Gen 4, T14 Gen 4, X13 Gen 4, ThinkPad Yoga 21