This SKU is discontinued, it is replaced by: USB-2COMi-Si

USB-2COMi-SI-120V (120 volt, 60 hz version):
USB to dual serial port converter with DB9 (9-pin male) connectors. RS-422/RS-485)
Comes with a USB cable & power supply (120 volt, 60 hz).

This model supplies Optical Isolation & Surge Protection.

Each RS-422/485 port is individually optically isolated with 2000 volt DC optical isolation. The optical protects your PC or notebook from spikes and surges on the RS-422/485 network, by converting the electrical pulse into an optical signal and then changing it back into an electrical pulse. Your computer is well protected, since the surges and spikes cannot cross the optical link.

Each RS-422/485 port is individually protected by surge protector to withstand electrostatic discharge and power surges up to 25KV ESD. Surge suppression on all signals prevent damages caused by lighning and high voltage.

Comes with a USB cable & power supply (120 volt, 60 hz).

• Adds two high speed RS-422/485 ports via USB connection.
• 384 byte receive buffer.
• 128 byte transmit buffer for high data throughput.
• Auto transmit buffer control for RS-485.
• Data rates: 300 bps to 230K bps.
• Serial connector: Two DB-9 male connectors.
• Easy connectivity to printers, POS, Industrial control devices.
• Data signals: TX-, TX+, RX+, RX-, GND, RTS-, RTS+, CTS+, CTS-.
• Self-powered. External power supply included.