Review on 🔌 TECHTOO 4 Port Professional FTDI CHIP USB to Serial RS232 DB9 Adapter Converter: High-Quality Serial Cable with Thumbscrews for Error-Free Connections by Wayne Girard

Product works well. However, the driver must be updated from another unnamed source. Also, the driver is built into the OS X startup files even when no USB device is connected. It is not known if future updates will be available? The other part of this scenario is that you may need to participate in changing some COM port addresses. This is because other installed software uses COM ports and returned ERROR CODE showing COM port not found. Buyers be careful you must.