Save the set-up volume and keep the value at the time of power off and on
Clock Battery (for RTC) with Lithium-ion non-rechargeable coin battery
LED:
– [power supply ON] , and [power supply OFF] modes are supported.
– Power supply ON: Red then turn Green after kernel boot up.
– Power supply OFF: LED light off
Wi-Fi：IEEE 802.11b/g/n/ac (optional)
Bluetooth 4.2 (optional)
Ethernet 10/100/1000 Mbps LAN RJ45 built-in
Key button (vol+、vol-、Up、Down、Exit/Enter (when in recovery mode))
USB host type A port （USB 2.0 high speed 480Mbps）x 2
