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☆ USB bus power supply
☆ COM port can be manually adjusted for use
☆ bus type: USB2.0
☆ Bus Transceiver: Full Duplex RS-232
☆ bus interface: 5V bus power
☆ PCB connector: DB9F
☆ Number of interfaces: 4Ports RS232
☆ Product Size: 430 (W) x115 (L) x44 (H) mm
☆ Operating environment: relative humidity: 5% to 95%
☆ Storage temperature: -40 ° C to 85 ° C
☆ Flow control: None, Xon / Xoff, RTS / CTS
☆ Data signals: Tx, Rx, RTS, CTS, DTR, DSR, DCD, RI, GND