Features 1、Isolation 6‑in‑1 debugging tool, no need to jumper, DIP switch, etc., can implement isolation conversion between USB, RS‑232, RS‑485/422, TLL level 2、YN‑4561I is compatible with USB 2.0 standard, supports for Windows, for OS X , for Linux , for Android operating system. Simply connect your device via USB interface, install the driver to use immediately 3、1kV isolation between USB, RS‑232, RS‑485/422, TLL, support mutual conversion between USB and RS‑232, USB and RS‑422/485, USB and TTL, TTL and RS‑S232, TTL and RS‑422/485, RS232 and RS‑422/485 4、No external power supply, take electricity from USB port, support for WindowsXP / Server2003 / Vista / 7 / 8 / 8.1 / 10/ OS X , for Linux , for Android 5、Standard USB b square port, equipment comes with a turn b wire, RS232 adopt the standard DB9 serial port male, RS485 / 422 is a plug‑in terminal Specification Item Type: Serial Port Module Material: ABS Model: YN4561I Port Design USB: Standard b square port, equipment comes with a turn b wire RS232: Standard DB9 serial port male TTL: Insert terminal Transmission Rate: 1200bps - 115.2kbps Check Bit: Odd check, even check, no check Data Bit: 5, 6, 7, 8 Stop Bit: 1, 1.5, 2 RS232: TX, RX, GND, conforms to TIA / EIA-232 RS485: D +, D- balance difference half duplex, in line with TIA / EIA-485 standard RS422: T +, T-, R +, R- balance differences full duplex, in accordance with TIA / EIA-422 32 x RS-422 or RS-485 devices can be connected TTL: VIO, RXIN, TXOUT, GND support 5V or 3V level Work Distance: RS-232: 50ft(15 meters) at 9.6kbps Package List 1 x Serial Port Module 1 x Cable 1 x User Manual