Huawei UPS2000-G-6KRTLL Quick Manual page 9

Install parallel communications cables and parallel current equalization cables. Three UPSs
connected in parallel are used as an example.
(1) Parallel current equalization cables
Installing Communications Cables
3.2
1. The USB channel supports a serial data communications protocol between the UPS and a PC.
2. If you connect a DB9 connector to the RS232 port, the UPS can exchange data with the PC
over serial communication.
3. You can use only either USB or RS232.
(2) Parallel communications cables
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