StarTech 4 Port USB to Serial RS232 Adapter - Wall Mount - Din Rail - COM Port Retention - FTDI USB to DB9 RS232 Hub, TAA (ICUSB2324I)

Tried many cheap USB to RS-232 converters, what a waste of money and time trying to get them to work properly; nothing but communication errors and frustration. This one works flawlessly in Windows 7, 8.1 and 10; drivers installed automatically (no disk needed) and COM ports are persistent (never change) between multiple devices; it looks like the driver always remembers a serial number (or somehow is able to identify a specific unit) of the device and assigns it the same COM port every time this specific device is plugged in. Used 3 of those converters on the same computer without any problems whatsoever. Has an external 5V input port (I think it is a standard 2.5mm plug) but I did not need to use it; it works flawlessly getting it's power only from the USB port. The case is solid steel and comes with a DIN rail adapter as well as it can be surface mounted with screws. Love the send and receive indicator lights (for each port) since I can visually identify what is happening with either serial port. Also has a power LED. I cannot say anything about it's high speed serial performance since my application calls for only 38.4kbs and it has been running without a single error for months now. At this speed, basically saturating both ports with data traffic, it is just slightly above the ambient temperature (cannot really call it warm). As for reliability goes, I have been using approx. 15 of those converters for several months (purchased from different sources including Amazon), not a single DOA or failure. A true industrial quality USB to serial port converter that is very reasonably priced.

This is the greatest! What an amazing device. I have fought with various adapters for years and they are always causing problems, especially when you add a new device. This box works perfectly and replaces all those irritating adapters. I have a weather station, 2 ham radios, and a communications device all plugged in and they can all be used at the same time. No issues with port numbers or anything like that. Plus, eliminating the serial/usb adapters freed up the usb ports on my PC that they were using. In addition, all the serial cables go to this box which can be located out of the way, reducing cable clutter at my PC. This is a terrific adapter hub and I highly recommend it to anyone who uses more than one serial/usb adapter.

I’ve used these for years and the are well made and durable.

Needed extra I/O ports to run Ham radio gear, i.e., rig control and TNC's. Gave this a try. Arrived today. Since I am running Windows 10, the instructions were not exact. Had to use the device manager to select the supplied drivers. The key to install process for Win 10 is to reboot the computer after you load those drivers. Otherwise, the serial ports will continue to have the little yellow triangles next to them and be listed as "other devices." Now successfully running Ham Radio Deluxe rig control through the device with room for 3 more devices. The MFJ-1270 is next on the list, with left over slots for older HT programming and GPS throughput. If you own multiple I/O devices this does the job very nicely.One suggestion for StarTech - give us a bit more room between ports for those DB-9 connects.These old fingers don't work like they used to.

I had been using this with Windows 10 when some how.....I was updated to Windows 11. My experience has been that when these updates occur, I lose some driver. That didn't happen. Port assignments in Device Manager are stable.

As an amateur radio operator, this device is a must have for running ham radio software. I have purchased two of these. One for windows 7 and another for windows 10. Both were extremely easy to install on both computers. Window 7 Home premium machine is a Dell Inspiron 1750; the other is a Dell XPS tower running win 10 Pro. These devices use the ultra reliable FTDI chipset and will retain port assignments across reboots. I can confirm these devices will work and work well with "Ham Radio Deluxe" software.

I used this to successfully connect 8 RS-232 temperature controllers to a single USB port. I am reading at .5 second intervals and it works well. The weird thing is that the port mapping was not sequential to the port numbering on the box. It was a hit and miss thing. I had to start up polling on a single port and move the device connection to the different ports to find which one was active. And for some reason, it even skipped over to unused port numbers. So, I had ports 1 - 6 mapped to Com 8 - Com 13 and then 7 and 8 mapped to Com 15 and 16. Com 1 - 6 did not map to 8 and 13 in that order either. port 1 was connected to com 10 and some random order. I did order a second one for another system so it should show you that the mapping was not a primary concern and once I figured it out, it should never have to be redone. I unplugged and replugged several times and the port mapping remained in tack.

plug it in and it worksI needed to trim cable end width is serial cable so 4 fit side by side. simple fixeasy secure console server with RPI using ser2net package