9. Communication Port
9.1 USB Interface
The USB port is compliance with USB 1.1 protocol for its communication software.
9.2 Dry contact Interface
Thisseries UPS has independent dry contactinterface. Please contact your local distributor for
details. The following is the pin assignment and description of DB-9 connector.
9.3 3RS-232 Interface（optional）
The RS-232 port is available for UPS monitoring, control, and firmware updates.
The cable pins for the RS-232 communication port are identified in the following illustration.
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