RB411UAHR leds

dear all
[admin@MikroTik] /system leds> print
Flags: X - disabled, * - default

TYPE INTERFACE LEDS

0 interface-activity ppp-out1 led1
1 X interface-receive ppp-out1 led2
2 X interface-status ppp-out1 led3
3 X interface-transmit ppp-out1 led4
4 modem-signal led5

Why 3G module regardless of whether there is, led5 are light

my ROS is V6.11