2.7 USB Connector
The USB interface supports Plug and Play, which enables you to connect or disconnect a device whenever you want, without turning off the com- puter.UNO-2173A provides two and UNO-2173AF provides four con- nectors of USB interfaces, which gives complete Plug & Play and hot swapping for up to 127 external devices. The USB interface complies with USB EHCI, Rev. 2.0 compliant. The USB interface can be disabled in the system BIOS setup. Please refer to Appendix A.7 for its pin assign- ments.
2.8 VGA Display Connector
The UNO-2173A/AF provides a VGA controller (Intel 945GSE GME, for a high resolution VGA interface. It supports up to 2048 x 1536 @ 75 Hz maximum resolution
2.9 Battery Backup SRAM (Reserved)
UNO-2173A/AF reserves 1 MB of battery backed SRAM for projects. This ensures that you have a safe place to store critical data. You can now write software applications without being concerned that system crashes will erase critical data from the memory. Please contact Advantech if this is function is required in your project.
There is a BTRY LED in the front panel of the UNO-2173A/AF, please replace the lithium battery with a new one if the BTRY LED is activated.