2
3. Connect the optional USB flash drive, as shown below:
Note: The USB port can also be used to connect color-screen expansion module EXP50, USB headset or DECT dongle kit DD10K.
Note: The IP phone should be used with Yealink original power adapter (5V/2A) only. The use of the third-party power adapter may
cause the damage to the phone.
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4. Connect the AC power or PoE, as shown below:
A
B
AC Power Option
PoE ( Power over
Ethernet ) Option
Power Adapter
(DC 5V)
IEEE 802.3af compliant
PoE Hub/Switch
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