2 in 1 USB to RS422 & to RS485 Converter Adapter with CH340T Model: USB-422/485(A)Mainly have the following important features: 1. This converter uses a high-performance ch340 chip, which supports almost all operating systems, including windows, linux, etc.! 2. Baud rate range: 300~115200bsp! 3. With TVS surge protection, product design strictly in accordance with industrial requirements 4. All status is clear at a glance. There are two kinds of indicator lights on the board. When the USB is normal, the power light (red) is on, one is that the computer transfers to 422 (485) through USB, and then the data is sent out. The indicator (red) is on, and the other is that 422 (485) receives data and uploads data to the computer. The light (green) is on. 5. Very convenient to carry, similar to a normal U disk. 6. This converter is USB2.0 interface, compatible with USB1.1. 7. It can be directly plugged into the computer through the data cable, without external power supply. Typical applications: 1. Access control system, card, attendance machine 2. Communication with PLC and man-machine interface 3. Industrial instrument with communication 4. Video control PTZ 5. Other places that need 485, 422 communication Pin definition: USB to 422 terminal definition 1—————R- (receive) 2—————R+ (receive) 3—————T- (send) 4—————T+ (send) 5—————GND (ground) USB to 485 terminal definition 1—————Empty 2—————Empty 3—————B- (485 mode) 4—————A+ (485 mode) 5—————GND (ground) Package 1pc 2 in 1 USB to RS422 & to RS485 Converter Adapter with CH340T Delivery Details We provide standard shipping to international via China Post airmail or Hongkong Post airmail with tracking number.Contact us if not receive items. We only ship to the approved address given in Paypal Payment.Please make sure payment address in Paypal is correct.Any non-received items caused by invalid address registered on Paypal are not in our full refund or replacement policy. Returns and Replacements We accept returns and replacements within 30 days from the day the cutomer receive the products.Please make first contact within 30 days from receiving the order.Products should be returned in original condition. About Feedback We will try our best to solve any dispute and satisfy our customers. Please contact us firstly if you have any problems.As you know,a negative feedback can deal nothing and the positive feedback is very important for us.So we hope to your understanding.And we will appreciate if you would like to contact us for solving your problems.Thanks!