This is a replacement Internal speaker assembly for Lenov0 ThinkPad X1 Carbon 4th Gen Laptop series, No soldering required, Simply plugs into the motherboard, repair distorted sound or issues relating to having NO sound! FRU: 00JT835 Manufacturer Part Number(s): 023.4006E.0012 Connector type: 4-wire 4-pin, Plug In, 4 Ohm /2W Condition: New and Original, unused in perfect condition. NOTE: the screw NOt included, Please retain the original screw for the installation of this part. Reference Compatible with Laptop models: - ThinkPad X1 Carbon 4th Gen (20FC/20FB) - ThinkPad X1 Yoga 1st Gen (20FR/20FQ) What's in the box: 1x Internal Speaker assembly