🔗 Connect legacy tech with future-ready ease — don’t get left behind!
The DTECH DB9 to RJ45 Serial Adapter is a compact, matte black converter that transforms standard 9-pin RS-232 female DB9 ports into RJ45 female connectors, enabling serial data communication over cost-effective Cat5/Cat6 cables. Supporting up to 65 feet of extension with secure thumbscrew fittings, it’s compatible with a wide range of professional devices including computers, printers, and industrial equipment. With a 20mA current rating and ClimatePartner certification, it combines reliable performance with eco-conscious design.
| ASIN | B08JLWRFH6 |
| Best Sellers Rank | #26 in Serial Adapters |
| Brand | DTECH |
| Color | black |
| Compatible Devices | Desktop |
| Connector Type | RJ45 |
| Current Rating | 20 Milliamps |
| Customer Reviews | 4.4 out of 5 stars 157 Reviews |
| Finish | Matte |
| Finish Type | Matte |
| Item Type Name | RS232 to Ethernet Converter |
| Item Weight | 0.01 Kilograms |
| Manufacturer | guangzhouditedianzikejiyouxiangongsi |
| Model Number | CB0241 |
| Number of Items | 1 |
| Number of Ports | 2 |
| Package Quantity | 1 |
| Power Plug Type | No Plug |
| Specific Uses For Product | PC |
| Unit Count | 1.0 Count |
| Warranty Description | 180 days from purchase date |
| Warranty Type | Limited |
O**A
Great Adapters
Work as a charm. Perfect fit.
T**N
Works perfectly
Worked great for a what I needed it for. Wiring diagram was easy to understand.
Z**S
Helps in the battle between old and new technology.
Fir those whe refuse to throw out old gadgets, this is for you. Sometmes the new talks with the old, sometimes they don't
M**S
Worked
Worked but didn't help
R**E
Works great, but pinout IS NOT what is shown in the pictures!
The pinout is direct from the DB9 to the RJ45: 1 to 1, 2 to 2, ..... ,7 to 7, 8 to 8, and 9 isn't hooked up. If you are using one of these adapters at either end of an ethernet cable, then it will work perfectly fine (within serial cable length limits anyway). Or if your are rolling your own device and can make sure to match the pinout, you are good as well. But, if you are trying to use one of these as a console cable (to a Cisco or whatever) or as an EIA/TIA-561 compatible cable, then it won't work properly as the pinout is different. Unless of course you can modify your device to change the pinout. While the product itself is 5 stars and works great, the incorrect information deducts a star. If the listing was updated to show the correct pinout, I would update my rating no problem.
I**O
Not for USB to RJ45 serial adapter
You can not use this adapter with a USB to RJ45 serial adapter. The pin out on the picture description is wrong. This adapter is meant to be used with an Ethernet cable and another one of these on the other end.
T**L
Well-constructed in appearance. Windows 10 64 bit won't go to download the driver.
No CD or DVD with appropriate drivers were included. Finding the right ones on the web is hit-and-miss. Not good. I have frequent difficulty getting my amateur radio frequency information from the radio to my logging software via a USB-to-Serial port comnnection. Today I tried a RJ-45-to-DB9 serial connector instead of the USB-to-Serial port cable. The requirement to find the proper Windows 10 64-bit driver for either of these cables is hit-and-miss with insufficient instructions and guidance. Where can I find the FTDI drivers for download and how do I determine which specific driver is appropriate for my Windows 10/11 64-bit laptops?
J**U
Good Item
Good Item works great
Trustpilot
3 days ago
1 week ago
