Which PoE standards are the Impera Tango working with?

PoE standard 802.3af / 802.3at.

PoE input
Compliance 802.3af / 802.3at
802.3af PD mode A + B
PD Class 0 (802.3af) / 4 (802.3at)

PoE output
Compliance 802.3at
Max power output 12 W @ 15 W input
PoE output mode - Mode B (pin 4/5 + 7/8)