SmartFlex SR308
5.8.8
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 26: 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 reboot of the router.
Mounting USB flash drive to the system:
To use the USB flash drive in the Linux system
of the router, it is necessary to mount it. Use
dmesg
command to see the name of recently
connected device (E. g.
sda:
sda1
) and then use
mount
command. Example:
mount /dev/sda1 /mnt
24