Thankfully as time has passed, those have gotten a lot more standardized. It’s rare to find anything these days that isn’t the Cisco pinout. Most new stuff is just USB which is even better. But vendors who use USB connectors without putting USB on the port annoy the crap out of me. Answer from cyberentomology on reddit.com
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Reddit
reddit.com › r/networking › better db-9 to rj-45 solutions?
r/networking on Reddit: Better DB-9 to RJ-45 solutions?
August 27, 2023 -

Probably like many, I've got a stack of these DIY DB-9 to RJ-45 adapters for console access because every manufacturer is special and needs their own unique pinout to accomplish basic serial communication.... Worked well enough with my Toughbook CF-19, but need another serial extension cable to fit in the flush DB-9 ports on things like my Dell Latitude Rugged laptop and CF-20 tablet.

Cleaning/reorganizing my tool bag today, looking at these things, and curious if there's a better mousetrap out there? I know could just pick up a generic premolded RJ45 female to DB-9 adapter, then make custom CAT5 cables to match, but that would take up a lot more room in the tool bag too.

Would be great if someone made something similar to these custom adapters but with a molded DB-9 end, or maybe something like a RJ-45 coupler that could be repinned, so I wouldn't have to carry a bunch of bulky cables.

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NetworkTechInc
networktechinc.com › serial-rj45-adapters.html
Console Serial Port Adapters RJ45 Connectors, DB9M DB25 RJ45 Pins
Also known as: serial port adapters, serial port connectors, console adapters, RJ45 connectors, serial port pinouts, serial cable adapters. ... Connect your serial device with a male DB9 connector to a SERIMUX console switch using CAT5/5e/6 cable.
Call   330-562-7070
Address   1275 Danner Dr., 44202, Aurora
Discussions

Compatible USB to RJ45 Serial Rollover Cable for RB3011
Hello Would the following cable be suitable for connecting my laptop’s USB port (Linux/Mac) to the RJ45 serial port at the back of a RB3011UiAS-RM? https://www.tripplite.com/usb-rj45-cisco-serial-rollover-cable-usb-type-a-rj45-6-ft-microsoft-surface~U209006RJ45X/ Thanks More on forum.mikrotik.com
🌐 forum.mikrotik.com
5
0
July 5, 2017
USB-C to RJ45 serial rollover adapter F/M
Amazon link: https://a.co/d/aVRF3uA More on reddit.com
🌐 r/networking
27
3
August 4, 2024
IO Link kind of sucks
It highly depends on the engineering system and sensors implementation around io-link. More on reddit.com
🌐 r/PLC
73
35
March 21, 2024
Better DB-9 to RJ-45 solutions?
Thankfully as time has passed, those have gotten a lot more standardized. It’s rare to find anything these days that isn’t the Cisco pinout. Most new stuff is just USB which is even better. But vendors who use USB connectors without putting USB on the port annoy the crap out of me. More on reddit.com
🌐 r/networking
33
4
August 27, 2023
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Antaira
antaira.com › products › Serial-Cables › CB-RJ45-DB9M-90
RJ45 to DB9 Male Serial Cable - 90cm
RJ45 to DB9 Male Serial Cable - 90cm | Antaira · To request more information regarding our products, please fill out the following online form and a customer service representative will contact you immediately. Fields marked (*) are required. Thank you
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Grid Connect
gridconnect.com › collections › serial-to-ethernet
Serial to Ethernet Products – Grid Connect
Buy serial to Ethernet adapters and device servers with prices starting at $60. NET485 RS485 Ethernet adapter, NET232+ RS232 to Ethernet intelligent cable adapter, NetDirect serial to Ethernet cable with POE option. Available products are box or cable with metal or plastic housing.
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Juniper Networks
juniper.net › documentation › us › en › hardware › mx2020 › srx4600 › topics › concept › port-rj45-db9-adapter-pinout.html
RJ-45 to DB-9 Serial Port Adapter Pinout Information | Juniper Networks
The console port on a Juniper Networks ... connector pin and you want to connect your laptop or desktop PC to the device, use a combination of the RJ-45 to DB-9 socket adapter along with a USB to DB-9 plug adapter....
Find elsewhere
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Amazon
amazon.com › rj45-serial › s
Amazon.com: Rj45 To Serial
DTECH DB9 to RJ45 Console Cable Cisco Device Management Serial Adapter 72-3383-01 CAB-CONSOLE-RJ45 (6 Feet, Blue) · USB Console Cable,USB to RJ45 Console Cable for Cisco Routers/AP Router/Switch Windows, Mac, Linux(1.8m,Blue) · DTECH RS232 DB9 to RJ45 Serial Adapter DB-9 Female/Male to RJ-45 ...
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Amazon
amazon.com › COOSO-Serial-Female-Ethernet-Console › dp › B01MF9F7HF
Amazon.com: LFHUKEJI RJ45 to RS232, DB9 9-Pin Serial Port Male to RJ45 Cat5 Ethernet LAN Console 3.3Ft : Electronics
RJ45 to DB9 Console Cable, 1.8m/6ft RS232 to RJ45 Console Cables Serial Port Management Adapter Compatible with Cisco Router Switch
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MikroTik
forum.mikrotik.com › hardware › mikrotik hardware general
Compatible USB to RJ45 Serial Rollover Cable for RB3011 - MikroTik hardware general - MikroTik community forum
July 5, 2017 - Hello Would the following cable be suitable for connecting my laptop’s USB port (Linux/Mac) to the RJ45 serial port at the back of a RB3011UiAS-RM? https://www.tripplite.com/usb-rj45-cisco-serial-rollover-cable-usb-typ…
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Amazon
amazon.com › LFHUKEJI-RS232-RJ45-Ethernet-Adapter › dp › B01N43TG3A
Amazon.com: LFHUKEJI RS232 to RJ45, DB9 9-Pin Serial Port Male to RJ45 Female Cat5e/6 Ethernet LAN Extend Adapter : Electronics
Connect the equipment serial port to the RJ45 port on routers,Support maximum distance 65.6FT · Compatible with most routers on the market,and you need to buy a pair for sending and receiving · Nick-plated and Oxygen-free copper transmission ...
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Westward Sales
westwardsales.com › home › antaira › cb-rj45-db9m serial cable, rj45 to db9 male, 30/90 cm length
CB-RJ45-DB9M Serial Cable, RJ45 to DB9 Male, 30/90 cm Length
CB-RJ45-DB9M Serial Cable, RJ45 to DB9 Male, 30/90 cm Length
CB-RJ45-DB9M RJ45 to DB9 Male Serial Cable, 30/90 cm The CB-RJ45-DB9M is a serial straight-through cable that converts an RJ45 to a DB9 (male) connector. It is 30 or 90 cm (11.8 or 35.4 inches) in length.  The cable is constructed from UTP CAT5e with 24 AWG gauge wires.  The molded DB9 features locking screws for a secure, stable connection. The CB-RJ45-DB9F is an optional cable accessory for the Antaira STE-708 and STE-716 industrial Serial-to-Ethernet device servers.
Price   $11.00
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US Converters
usconverters.com › db9-rj45-adapter
DB9 to RJ45 | RJ45 to Serial converter | RJ45 serial adapter
Use this DB9 to RJ45 adapter, also called a rs232 to rj45 converter or simply a rj45 serial adapter, to convert any standard 9-pin DB port to a standard RJ45 port. These modular adapters comes unassambled and are not functional until they are assembled.
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Stargazers Lounge
stargazerslounge.com › equipment › diy astronomer
Converting serial/USB to RJ45/USB (EQDIRECT) - DIY Astronomer - Stargazers Lounge
June 16, 2015 - Hi all,I already own a serial to USB connector for controlling my mount and I was wondering if I could just strip the USB part and connect it to a CAT5 cable ? This would give me an EQdirect cable for free The other solution was to get a TTL-232R-5V PCB but I would think that I already have that ...
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Eaton
tripplite.eaton.com › products catalog › network adapters › b090a9f
Modular Serial Adapter Straight-Through Wiring (DB9 F to RJ45 F) | Eaton
(1.83 m) Console Servers B098-048 ... with Dual GB NIC, 4Gb Flash and 4 USB Ports, TAA · USB Adapters U209-006-RJ45-X USB-A to RJ45 Serial Rollover Cable (M/M) - Cisco Compatible, 250 Kbps, 6 ft....
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Eaton
tripplite.eaton.com › products catalog › network adapters › p44089fm
DB9 to RJ45 Modular Serial Adapter, RS-232, RS-422, RS-485 | Eaton
The adapter features a male DB9 serial connector with color-coded twisted-pair wires on one side and an RJ45 female connector on the other, allowing you to create customized RS-232, RS-422 and RS-485 connections.
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CDW
cdw.com › product › tripp-lite-db9m-rj45-modular-serial-adapter-ethernet-to-console-server › 1787791
Eaton Tripp Lite Series Modular Serial Adapter to Ethernet Console Server - serial adapter - DB-9 to RJ-45 - B090-A9M - Cable Connectors - CDW.com
DB9M - RJ45 Modular Serial Adapter Slotted Thumbscrews for secure connections Wired for DB9 Serial UPS Connections System Requirements Use with Tripp Lite Console Server models: B092-016, B096-016, and B096-048 Package Includes 1 x DB9M - RJ45 ...
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CDW
cdw.com › product › startech-db9-to-rj45-modular-serial-adapter-black › 386543
StarTech DB9 to RJ45 Modular Serial Adapter - Black - GC98FF - Cable Connectors - CDW.com
DB9 to RJ45 Modular Adapter Female to Female/DB9 to RJ45 Adapter/RJ45 to DB9 Adapter/RJ45 to DB9 View All · The GC98FFModular Adapter features a DB9 female connector and an RJ45 female connector.