Usb Connector; Battery Backup Sram - Advantech UNO-3072A User Manual

2.9 USB Connector

The USB connector is used for connecting any device that conforms to the
USB interface. Many recent digital devices conform to this standard. The
USB interface supports Plug and Play, which enables you to connect or
disconnect a device whenever you want, without turning off the computer.
The UNO-3072A/3074A provides four connectors of USB interfaces. The
USB interface complies with USB UHCI, Rev. 2.0 compliant. The USB
interface can be disabled in the system BIOS setup. Please refer to Appen-
dix A.9 for its pin assignments.

2.10 Battery Backup SRAM

UNO-3072A/3074A provides 512 KB of battery backup SRAM. 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. There is a BTR LED in the front
panel of the UNO-3072A/3074A (Figure 2.13). Please replace the lithium
battery if the BTR LED is activated.
Figure 2.13: LED Location for Battery Backup
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