View source for UGREEN 40391 USB to RS-232 Adapter

[[File:UGREEN_40391_Stock_Photo.jpg|thumb|stock photo]]

== Overview ==

USB to RS-232 adapter, based on an FTDI chipset. It has a male DE9 pinout with female jackscrews, similar to a native RS-232 port on a computer.

== Wiring Diagram ==

{| class="wikitable"
! DE9 Pin
! Function
! Direction
|-
| 1
| DCD
| PC &larr; device
|-
| 2
| RXD
| PC &larr; device
|-
| 3
| TXD
| PC &rarr; device
|-
| 4
| DTR
| PC &rarr; device
|-
| 5
| GND
| PC &harr; device
|-
| 6
| DSR
| PC &larr; device
|-
| 7
| RTS
| PC &rarr; device
|-
| 8
| CTS
| PC &larr; device
|-
| 9
| RI
| PC &larr; device
|-
| (shield)
| shield
| PC &harr; device
|}

== Online Resources ==

[https://www.amazon.com/gp/product/B06WLLSDR9/ UGREEN USB to DB9 RS232 Cable Converter, USB 2.0 to Serial Adapter Hexnuts Male with FTDI Chipset | Amazon]