Merci Sébastien pour ces précisions…
J'avais cherché sur Google la signification des Leds et j'étais tombé la dessus :
I believe the following is correct for the B+ :
Red PWR LED
on if power OK
Green ACT LED
steady on if no SD card during boot
irregular flashes for SD card access
Ethernet Socket Left LED (yellow)
on 100-Mbps connection
off 10-Mbps connection
Ethernet Socket Right LED (green)
on if link established
flashes for port activity
off if no link is established
J'avais cherché sur Google la signification des Leds et j'étais tombé la dessus :
I believe the following is correct for the B+ :
Red PWR LED
on if power OK
Green ACT LED
steady on if no SD card during boot
irregular flashes for SD card access
Ethernet Socket Left LED (yellow)
on 100-Mbps connection
off 10-Mbps connection
Ethernet Socket Right LED (green)
on if link established
flashes for port activity
off if no link is established