This is a 3-year base warranty service for the Lenovo ThinkSystem SR665 V3 rack server (the same platform configured elsewhere in this catalog), not the physical server itself. A warranty line item like this extends Lenovo's standard coverage period to three years, covering parts and labour for hardware faults on a previously purchased SR665 V3 unit -- 'Base' typically means the standard/entry support tier rather than an enhanced Premier Support level with faster response times (as seen in the Premier Support line items elsewhere in this catalog). Sold to accompany or extend cover on an SR665 V3 already in a customer's environment.