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Snap One
snapav.com › shop › en › snapav › binary-trade-db9-male-to-rj45-modular-adapter
Wirepath™ DB9 Male to RJ45 Modular Adapter
Connecting RS-232 equipment to ... neater by using these DB9-RJ45 adapters. Just make up a custom length network cable using Cat5e/6, then put an adapter on each end to convert from RJ45 to the appropriate gender DB9 connector....
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Micro Connectors
microconnectors.com › modular-adapter-db9-male-to-rj45
Modular Adapter (DB9 Male to RJ45) - Micro Connectors, Inc.
Modular Adapter (DB9 Male to RJ45)
For serial printers, terminals, modems, POS and other serial equipment
Price   $5.99
Discussions

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
DB9 to RJ45 serial connect to switch - correct pinout?
This pinout worked for me: RJ45 -> DB9 RTS 1 -> 8 CTS DTR 2 -> 6 DSR TXD 3 -> 2 RXD GND 4 -> 5 GND GND 5 -> 5 GND RXD 6 -> 3 TXD DSR 7 -> 4 DTR CTS 8 -> 7 RTS IIRC, I had to leave one of the ground pins unplugged. http://i.imgur.com/O3RRKQC.jpg *Edit: Here's another picture for clarity. Also, you can push the pins back out with something like a small flathead screwdriver (~1mm). http://i.imgur.com/7hWniXb.jpg More on reddit.com
🌐 r/networking
14
19
July 27, 2017
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Micro Center
microcenter.com › home › networking, modems › networking › network accessories › networking/ethernet cables
QVS DB-9 Male to RJ-45 Female Serial/Terminal Modular Adapter - White - Micro Center
QVS DB-9 Male to RJ-45 Female Serial/Terminal Modular Adapter - White
DB-9 Male to RJ-45 Female Serial/Terminal Modular Adapter - White. Convert any DB9 connector into an RJ45 port, or vice versa. Use this modular adapter to connect dump terminals, PC's and telecom equipment to serial card or LAN. It is easy to assemble and has slotted thumbscrews to provide ease of installation. (Connectors: DB9 Male to RJ45 Female; RJ45 Pin Color Codes: #1 - Blue, #2 - Orange, #3 - Black, #4 - Red, #5 - Green; #6 - Yellow' #7 - Brown; #8 - White/Gray)
Price   $4.99
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CNC Specialty Store
cnc-specialty-store.com › rs232-cables › db9-male-to-rj45-ethernet-adapter-rs232
DB9 Male to RJ45 Adapter - CNC Specialty Store
This adapter allows you to run a RJ45/ethernet cable between to connectors for serial communications. Buy this DB9 Male to RJ45 adapter for RS232 from the CNC Specialty Store.
Find elsewhere
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Eagleg
eagleg.com › products › db9-male-to-rj45-modular-adapter
DB9 Male to RJ45 Modular Adapter | DB9 RS232 Serial Port Converter– EAGLEG.COM
DB9 Male to RJ45 Modular Adapter
DB9 Male to RJ45 Modular Adapter This modular adapter has a DB9 male connector that plugs into DB9 RS232 serial port and converts it to an RJ45 connection. All relevant materials are complied with RoHS directive. RJ45 Pinout: Pin1 -- Blue Pin2 -- Orange Pin3 -- Black Pin4 -- Red Pin5 -- Green Pin6 -- Yellow Pin7 -- Brown Pin8 -- White * Connector A: DB9 Male* Connector B: RJ45 Female* Type: Modular Adapter* Thumb screw
Price   $1.29
Address   4441 Baldwin Ave., Suite D. El Monte, 91731, CA
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L-com
l-com.com › home › ethernet › ethernet cabling › modular, d-sub › ra › modular adapter, db9 male / rj45 (8x8) jack
Modular Adapter, DB9 Male / RJ45 (8x8) Jack - RA098M
Simplify serial data connections by substituting in L-com's economical D-sub to modular adapter kits. Each unit is programmable to your needs by simply inserting the prepared flying leads into the appropriate positions and snapping the connector ...
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Newegg
newegg.com › p › pl
db9 male to rj45 adapter cable | Newegg.com
BUCIER 2-Pack DB9 to RJ45 Extender - Male & Female - 9Pin Serial Port to Ethernet LAN Network Adapter - Multimedia Video & Extend Transmission Distance - Compatible with DB9 Devices
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SF Cable
sfcable.com › db9-male-to-rj45-modular-adapter-31d1-b1.html
Buy DB9 Male to RJ45 Modular Adapter | SF Cable
DB9 Male to RJ45 Modular Adapter
This modular adapter has a DB9 male connector that plugs into DB9 RS232 serial port and converts it to an RJ45 connection. RJ45 Pinout: · Pin1 -- Blue · Pin2 -- Orange · Pin3 -- Black · Pin4 -- Red · Pin5 -- Green · Pin6 -- Yellow · Pin7 -- Brown · Pin8 -- White · Gold plated pin 28AWG wire Molded adapter Thumb screw
Price   $1.54
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Makers Electronics
makerselectronics.com › product › db9-to-rj45-serial-adapter-rs232-mal
DB9 to RJ45 Serial Adapter RS232 Male to RJ-45 Female Ethernet Converter
DB9 to RJ45 Serial Adapter RS232 Male to RJ-45 Female Ethernet Converter
Compact DB9toRJ45 serial adapter: RS‑232 male to RJ‑45 female, color‑coded wiring, thumbscrews for secure connection ideal for modular CAT cable use.
Price   EGP 25.00
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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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CablesAndKits
cablesandkits.com › cabling › audio & video cables › dvi & db9 cables
DB9 Male to RJ45 Female Modular Adapter - CablesAndKits
DB9 Male to RJ45 Female Modular Adapter
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Price   $0.96
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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
The GC98FFModular Adapter features a DB9 female connector and an RJ45 female connector. Used for modular RS232, RS422 and RS485 connections, the adapter converts your DB9 male connection into an RJ45 female connection.
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The Pi Hut
thepihut.com › home › db9 male to rj45 female adapter
DB9 Male to RJ45 Female Adapter - The Pi Hut
This DB9 Male to RJ45 Female adapter can be used to handle serial data communication between RS232 devices with one RJ45 network cable, or as an extender to extend RS232 serial signals.
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Rocstor
rocstor.com › product › db9-to-rj45-modular-adapter-f-f-convert-db9-male-into-an-rj45-female-connector
DB9 To RJ45 Modular Adapter F/F – Convert DB9 Male Into An RJ45 Female Connector – rocstor.com
DB9 To RJ45 Modular Adapter F/F - Convert DB9 Male Into An RJ45 Female Connector
Rocstor Premium DB9 To RJ45 Modular Adapter F/F - Convert Your DB9 Male Connector Into An RJ45 Female Connector - Used For Modular RS232, RS422 And RS485 Connections - 1X DB9 Female Connector To 1X RJ45 Female Connector Convertor - Black
Price   $5.95