Details ImagesZ-5500 Speakers Replacement Control Pod Pre636 Subwoofer Wired RemoteThis is a replacement control pod (black edition) for Logitech z-5500 speakers.If your old control pod is missing or broken, this can be used to replace it.This unit is compatible with z-5500 systems with pre636 PIDs!!! (PID between R200 - R636) , you can control the Front, Surround, Center and Bass Separately. It has 5.1 Channel Direct and Stereo x2 modes as in the original control pod.When the 3 mini-jacks are all plugged in, it works in 5.1 mode (6 channel direct no center speaker); When only 1 minijack is plugged into the main/front port, it works in 2.1 mode (stereo x2).With the 5.1/2.1 mode switch, you have the flexibility to either use a 5.1 sound card or just a 2.1 sound card or any MP3 devices with only 1 stereo audio port.Please note: For only pre636 models, the center speaker does not work, all satellite speakers and subwoofer will work.Product packaging