C2G/Cables to Go 40350 SMART Whiteboard ECP Extension Cable (20 ft, Black) Works with SMART models SB660i3, SB680i3, SB685i3, UF55 and UF55w. The cable is CL2-rated for in-wall installation. Connector 1: Two HD15 Male, One DB25 Female and Connector 2: Two HD15 Male, One DB9 Male, One S-Video Male, One 3.5mm Male, Five RCA Male Rated for In-Wall installation Extends the distance of the ECP from the whiteboard - allowing you to place it over 20 feet away. Lifetime Warranty