The TG650s supports several features, which are not supported by AT&T:
Storage server function
The LED functions:
The ports to connect all cables to are at the backside of the modem. The layout of the ports is
displayed in illustration 2.3.
ATT_TG650s_Quick_Install_Guide Page 8
Illustration 2.2: LED indications overview. Please notice the
dual Broadband LEDs, 1 per wire-pair.