Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Version | Dock Connection | AUX In | Battery | iPhone Certified | Video Out | Dual Voltage |
| --- | --- | --- | --- | --- | --- | --- |
| SoundDock series I | FireWire | No | No | No | No | Yes |
| SoundDock series I v2 | USB | No | No | Yes | No | Yes |
| SoundDock series II | USB | Yes | No | Yes | No | Yes |
| SoundDock series III | Lightning | Yes | No | Yes | No | Yes |
| SoundDock Portable | USB | Yes | Yes | No | No | Yes |
| SoundDock Portable v2 | USB | Yes | Yes | Yes | No | Yes |
Question:
how many video out connections does the sounddock portable have?
Answer:
1.0