Zaurus SL-6000 USB OTG Connector
Why USB OTG? With the explosion of non-PC devices (PDAs, Cameras, Cell Phones, etc) who's sheer number far exceed the number of PCs, a way to provide peer-to-peer communication between these devices was needed. The goal of the OTG specification is to effectively eliminate the role of the PC as a go-between for non-PC devices.
The Zaurus SL-6000 provides a USB host connection with a USB Mini-A connector (5 Pin). The USB Mini-A connector is one of the connectors specified as part of the USB OTG (On-The-Go) initiative. USB OTG specification version 1.0 was released 8/12/03.
Why not use a USB-RS232 adaptor on the USB OTG connector? The reason is power.
A typical USB-RS232 adaptor will use up to 800-48,000 times the power required by ZThinCable (and no, that's not a typo). What does this mean in practicle terms? When a USB-RS232 adaptor is used with the SL-6000, battery life is drastically reduced.