2 Uplink ports are SFP cages which support 1000 Base-X mini GBIC modules.
Power is supplied via 100-240V AC type C13 connector.
An unpopulated Serial header is found at J6. Pins are Vcc(3.3V, Square), TX, RX and GND. Serial connection is via 115200 baud, 8N1.
The UART is broken out to unpopulated header J6: