SmartFlex SR309
5.9.8
USB Port
Panel socket USB-A.
Pin
Signal mark
Description
Data flow direction
1
+5 V
Positive pole of 5 V DC supply voltage, 0.5 A
2
USB data -
USB data signal – negative pole
Input/Output
3
USB data +
USB data signal – positive pole
Input/Output
4
GND
Negative pole of DC supply voltage
Table 11: Connection of USB connector
Figure 25: USB connector
The USB port is disabled on overload to prevent its damage (connected device is trying to get
too high current). The port is enabled again after the reboot of the router.
Mounting USB Flash Drive to the System
It is necessary to mount the USB flash drive to be able to access it in the system of the
router. Follow these steps to mount the drive:
•
Use the
dmesg
command to see the list of recently connected devices.
•
In the output of the command find out the entry for the microSD card, for example:
sda: sda1
•
To mount the card to to
mnt
directory, use the
mount
command:
mount /dev/sda1 /mnt
For more information about the commands for creating, mounting, checking and unmounting
a file system on a USB Flash Drive, see the application note for
router app.
25
