Hotplug PSUs are very sturdy — rarely see warranty claims. Safe bet. Always make sure they're tested. Key checks: Make sure tested.
PRODUCT OVERVIEW
Lenovo 40W AC Adapter 40A offers convenient access to power wherever you need it. Keep one in your carrying case, one at home, and another in the office for maximum uptime.<br><br><b>Features & Benefits:</b><br>- Performs to the same specifications as the standard 40W AC adapter that ships with the Ideapad notebooks. <br>- Is not compatible with ThinkPad notebooks or other Ideapad notebooks<br>- Two colors for option, well complements your S series notebook<br>- Backed by a Warranty and Service and Support from Lenovo.