BenQ MX819ST 3000 ANSI Lumens XGA SmartEco Short Throw 3D Projector 3000 ANSI Lumens, 13000:1 Contrast Ratio Up to 10000 hours lamp life Short Throw allows an 80" diagonal image at 39 inches VGA in (D-sub 15pin)x2(Share with comp);Monitor out (D-sub 15pin)x1;Composite in (RCA)x1;S-Video in (Mini DIN 4pin)x1;HDMI x1;Audio in (Mini Jack)x2; Audio out (Mini Jack) x 1; Audio L/R in (RCA)x1;USB (Type Mini B)x1; RS232 (DB-9pin)x1;RJ45x1 Throw ratio : 0:61