Mini Displayport DP Thunderbolt To HDMI Adapter Cable For Lenovo Thinkpad T450 | eBay
Mini DisplayPort to HDMI Adapter Video LED TV/AV Cable For Lenovo Thinkpad T450 | eBay
An Ultrabook that works with your projector: Lenovo T450s reviewed | Ars Technica
Amazon.com: Mini DisplayPort to HDMI Adapter for Lenovo ThinkPad T450 Mini DP (Thunderbolt) to HDMI Adapter Compatible with MacBook Air/Pro, Microsoft Surface Pro/Dock, Projector and More 2-Pack : Electronics
Lenovo ThinkPad T450s Review - Laptop Reviews by MobileTechReview