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๐ Connect the past to your future โ never lose legacy device access again!
This 12-inch USB to RS-232 DB9 serial adapter, powered by the trusted FTDI chipset, delivers high-speed serial communication up to 921.6K bps with robust 512-byte buffers. Compatible with Windows 7 through 11, macOS, and Linux, it supports full RS-232 modem control signals and features LED status indicators for real-time diagnostics. Its rugged design includes surge protection and a compact 12-inch cable, making it the ideal solution for professionals needing reliable legacy device connectivity in modern setups.










| ASIN | B003RWWZAQ |
| Best Sellers Rank | #147 in Serial Adapters |
| Brand | USBGear |
| Color | Clear/blue |
| Compatible Devices | Devices with DB9 female serial connectors such as printers, scanners, modems, CNC machines, PLCs, and other legacy serial equipment Compatible Devices Devices with DB9 female serial connectors such as printers, scanners, modems, CNC machines, PLCs, and other legacy serial equipment See more |
| Connector Type | DB9 Male w/ Hex Nuts, USB Type A |
| Customer Reviews | 4.3 out of 5 stars 107 Reviews |
| Finish | Matte |
| Finish Type | Matte |
| Item Weight | 3 ounces |
| Manufacturer | USBGear |
| Mfr Part Number | USBG-232 |
| Model Number | USB-COM-CBL |
| Nominal Power | 2.5 watts |
| Number of Items | 1 |
| Number of Ports | 1 |
| Package Quantity | 1 |
| Power Plug Type | Type A - 2 pin (North American) |
| Specific Uses For Product | PC |
| UPC | 689076495769 729440691004 |
| Unit Count | 1 Count |
| Warranty Description | 1 Year |
| Warranty Type | Limited |
S**.
Works perfect on Windows 10 64 bit-Plug and Play
I liked that Windows 10 recognized it instantly and loaded drivers for it, the disc was not necessary. This adapter is mechanically exactly the same as the COM connector that is found on the XP and older computers. I plugged my radio programming cable into it and the computer found it in 2 seconds. Communication to and from the radio was faultless. I don't know why other reviewers are complaining about the female threaded studs, perhaps they don't know what a proper COM jack is supposed to look like? I did notice some other devices similar to this one that have the correct male pins but have the hold down bolts of a female plug instead of the nuts found on a jack, but those by definition are not standard COM jacks, but are instead a mechanical corruption of the original concept. I find nothing to dislike with this device other than perhaps it could use a bit longer wire.
P**S
Great little tool
A very useful device. Incredibly tolerant of everything I have subjected it to. Worked flawlessly with the drivers included (on a 7cm CDROM) on Windows XP and XP Pro. Ubuntu recognized it with native drivers. Works with arbitrary baud rates correctly under Windows but Linux takes a bit more work. On Ubuntu it does work correctly with standard 16550 UART speeds right out of the box. Neatly assembled and sturdy for its size. Good quality receptacles on both ends (USB and DB9). Recommended for the price.
J**R
Works great, easy install with Windows 7, Not with Windows 10
I struggled with this usb serial adapter for hours with Windows 10. Used the included disc with drivers. Never could get it to work. However, with windows 7, it was easy. Plug and play took 10-15 minutes. Did not need driver disc. Then it worked like a charm. I was able to download and install new firmware for my ioptron telescope mount.
A**L
HAPPY DAY!
Half the price of going through steno equipment providers!! I still use an old laptop with Windows 7 which I will never give up for my particular business and it was no problem at all connecting with the drivers.
K**.
RS232 has lost favor but....
RS232 isn't included as a port in laptops or PCs anymore and some adapters don't work well. This works well but didn't solve my problem because it does not work when there is serial port already installed. There probably is an interrupt conflict and may be a solution that I've yet to find.
M**E
Just what I needed.
I wanted to sync a Palm IIIxe with a state of the art laptop running Windows 10 Pro. This worked like a charm.
P**M
The mini CD was a problem
I needed the USB to serial for both a Windows and MAC, fortunately it worked on both systems without a problem, however, if I had needed to install any software on my Macbook I would have had a problem. The mini CD with the software cannot be loaded in via a Slot CD reader. Consider sending a full size CD in future that will work with all readers.
P**7
If you need to add RS-232
I have two of these. I plug them in and they just work. I have a computer hooked up to my firewall's console port just in case I need to communicate with it in that manner. The other one I keep in my tool bag in case there is other network equipment I need to hook up to. Preliminary build of some networking equipment this would be invaluable for. There are still times you need a COM port. It's nice to be able to simply add it to a more modern computer. it has onboard lights so you can see activity. Really a nice device and never had problems with it.
Trustpilot
4 days ago
2 months ago