Set Side: HDMI In 2.0, USB 2.0 (2), CI Slot; Set Rear: HDMI In (HDCP) 2 (2.0), Headphone Out, RF In 2, Digital Audio Out (Optical), RS-232C (D-Sub 9 Pin), Clock Interface (RJ12), RJ45 2 (Ethernet, Aux), External Speaker Out (3.5 mm Phone Jack) 2 (Spk-out 1, 4 W (Steoreo, R: 2.0 W, L: 2.0 W, 8Ω)