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Souta95

RS-232 Serial port to RJ11 (maybe RJ12). Lots of possible devices such as a 2-line LCD display, scale, barcode scanner, cash drawer, etc. Pretty common in PoS (Point of Sale) systems.


Constant-Dimension99

I'll see your PoS (Point of Sale) and raise you PoS.


Sailed_Sea

Hey! That intel atom is trying it's best.


Constant-Dimension99

Poor little beast.


ThisAccountIsStolen

>RJ11 (maybe RJ12). Actually, it's RJ10, which is the same connector you'd find from an old telephone handset to the base. You can tell because it's only 4P4C, rather than 6P2C/6P4C like RJ11, or 6P6C like RJ12.


Angelobo

Also common in networking, that's the only time I've used them, as a console cable


KaleidoscopeOk8653

its is also used to connect an analoge Modem , or an accoustic coupler


TechRat2

It’s used to manage enterprise networking equipment cable is an RS232-RJ45


Dude10120

I know what rj11 is but what is rj12?


the123king-reddit

Like RJ11 but with 2 more conductors


brandmeist3r

not just RS-232, the serial port can be used for RS-485 aswell


DanMinecraft16

i almost thought that was an vga cable for a sec


andrewtl271

Had to do a double take after seeing top comment, now a triple take for this one smh.


eithrusor678

Their fault for making it blue which is the colour for vga in the same size connector, just a different pin setup.


v13ragnarok7

Ya I was about to freak out if people don't know what a VGA cable is. I'm going to feel old. Obsolete cable though so the day is near.


Doge-Ghost

I still use a VGA monitor as second screen, it's connected with an adaptor cause modern graphics cards don't have VGA ports.


Legitimate-Skill-112

Exactly me! I could've upgraded but i couldn't justify an expensive second monitor so i sold my old monitor when i upgraded and kept using the same old second monitor


Bloodsucker_

Jesus Christ sometimes I can be very toxic. Thanks God I came to read the comments first.


AdderUpper

That is a console cable. Its primary use is to configure switches. For example a Cisco network switch that is about to be deployed into a corporate network. The network part is a RJ 45 (or relative depending on equipment) connected to the network switch "CON" port and the part that looks like a VGA-adapter is a DB9 serial adapter. You need a special serial card in your PC or an adapter to hook that to a laptop.


DumpsterFireCheers

The Cisco console cables (and many others at this point) use an 8 pin modular connector, not 4.


AdderUpper

The picture on my screen is not clear enough to tell the number of pins on that keyed RJ45. Cisco was an example of a manufacturer who uses this category of cables.


ThisAccountIsStolen

The image itself is very clear, and it's an RJ10 connector, which is only a 4P4C connector. Not sure why it's so hard to make out for you.


Dollbeau

Now we sort the Telnetters from the Tera Termers!


mixmates

We always called them terminal cables. Works with standard rs-232 no special card needed just a motherboard that has a serial port.


AdderUpper

I mean if your standard office PC didn't have a serial, you'd get a serial card and put it in. For someone not in networking I'd call it "special".


mixmates

I gotcha bud. Just wanted to clarify it, not insinuating you don’t know your craft.


TheoreticalFunk

Regardless its a 4-pin RJ connector not an RJ45 so it's all moot anyway because that's not what this is.


QwiksterYT

Oh, that's not VGA. Ok smh DON'T MAKE IT BLUE


johnnyheavens

There trouble if you rely on color for any cable. VGA isn’t always blue. Now Cisco console cables. Those are always special


megabit2

That is a rs 232 db9 connector, kind of like an old usb


Both_Advice_2

DB-9 doesn't exist. People sometimes call it that, but it's incorrect because it's DE-9. The shell size is E and it has 9 pins. B shells are much larger.


0x736174616e20

That's just a you problem. The whole rest of the world calls it DB9 because that's what it is. Only a weirdo would say, but actually it used to be called a DE9. Cool story bro.


megabit2

Also Is a serial port


Temporary_Air_3024

This cable is used to remind people born before the 90s that it's time to get a colonoscopy


JEREDEK

Can be a UPS communications port, I use the same on mine except it's USB and not serial


RickityNL

Technically USB is just that serial cable but in a nice new form


JEREDEK

And not RS232**


RickityNL

RS232 is also just a form of serial communication wire


JEREDEK

Yeah and it's correct. Also port, not wire


RickityNL

It would be connector then


JEREDEK

...still correct?


RickityNL

What's the difference


Sondita

Akshually it's the name of the protocol


RickityNL

I read it indeed. The name of the piece of plastic at the end of the wire is called a female DE-9


Tinsel-Fop

>nice new form And more nearly... universal.


NetoriusDuke

Rs232 or rs485


Dre_Dede

My back hurts


Cybershadow1981

This is a DB9F to RJ10 cable. Those are used to connect Meade Autostar telescopes to PC serial ports and use your favorite astronomy software, but they’ve also been popular with UPSes.


Traditional-Gas3477

Serial port cable for attaching older printers, scanners, 56K dial up modems, etc.


PurpleSparkles3200

No it isn’t. It’s a console cable.


condog1035

It's all serial. They are functionally the same.


Traditional-Gas3477

We're both correct. Serial port cables can also have an RJ45 connector at the other end for data communications with peripherals such as steering wheels, pedals and shifts.


PurpleSparkles3200

Yeah okay, you're totally right. I've got a bit of experience with sim racing setups, but this was something that I'd never even considered.


Traditional-Gas3477

Neither did I until I bought a Thrustmaster steering wheel set.


ThisAccountIsStolen

But this isn't an RJ45, but rather an RJ10 (the same you'd find connecting a wired telephone handset to the base). Not saying there aren't any, but I've never seen a switch that used this connector.


Shockwave2309

This!


Misuteri87

It's been a while since I've seen this one


homer_lives

I just tossed one of these at work.


HallInternational434

It’s how you link horses together for combined horsepower.


Prodsicle

God I feel old


Groundbreaking-Bug19

If you have one of those you must have a box with unused cables in it. Toss it in, seal it, then leave it to one of your kids in your will. They'll love you for it.


Dangerous-Fact7791

Used to program Telcom equipment with a PC's rs-232 serial port. Access to the equipment menu with modem (terminal) software like telnet or procom.


Accomplished_Emu_658

Had an old alignment machine that used this cable for the hand held scanner for vin plate.


grill_sgt

I work in Data Center. We use these to hook up a server to a laptop so customers can remote in to their servers.


michelmau5

It's a console cable. I've used it them configure Cisco switches.


Andytchisholm

That’s not a Cisco cable. They are RJ45 (8 pin), not RJ-11 (4 pin) and they are always teal.


michelmau5

Hmm, maybe they were Samsung switches then..


MuttznuttzAG

Could be an APC console cable


Evil_Cronos

This is like someone taking out a VHS and asking "what's this?" It just makes me feel old...


Satoshiman256

It's for viewing the matrix code.


MusicalScientist206

Attach it to Johnny 5.


smertsboga

Tell me you are born in the 2000 without telling me you are born in the 2000


Gex1234567890

Serial cable for these computers: Sinclair QL and all 128K models of Sinclair ZX Spectrum. I know this because I am a Sinclair enthusiast who owns several of these machines. The computers I mentioned all have a receptacle for the [BT631W ](https://www.betterbox.co.uk/images/1/1/CT6310.jpg)plug used by British Telephone.


jd_allawi

That’s a console cable


InevitableMobile2375

You plug it into your butthole. RJ45 is for broadcasting worldwide how it went :P


inthevendingmachine

It lets you use an old, rotary phone as a serial trackball device.


CaryWhit

I saw one on an old cnc engraving machine. Running xp with manual port settings. I highly recommend leaving it TF alone!


stevebinshaw1982

It connects the microwave to the record player


the_hat_madder

Started to say, "I was there, Gandalf..." but, it is not what I thought it was.


The-IT_MD

APC UPS devices had these RJ to rs232 cables for ups management.


Mariuszgamer2007

I have this type of cable. It was in my grandparents house for some reason


Gn0meKr

Thanks for making me feel old asf


Skypirate90

It's a museum piece


ManufacturerWest1156

Holy fuck I am old


RylleyAlanna

RJ-to-DB9 COM cable. Used to configure headless servers, switches, and other devices that take COM input.


Plastic-Umpire4855

One end serial, the other phone…. Dials into Matrix. Get me a connection.


Knarfnarf

Some older UPS systems would use these for serial communication to the connected computer. It would allow for the computer to monitor the battery status of the UPS and give the computer time to shutdown if power loss was inevitable.


BrutalArmadillo

Data cable.


King_Kingly

My god I feel old


TheOGTachyon

It's probably not a console cable, as many have guessed, because that's an RJ-11 jack, not an RJ-45. I think it's likely a proprietary serial cable (eg Palm Pilot) or a UPS cable.


Nihalkool

Its actually crazy to think that i am actually this old :) This Once used to be an everyday sight in my fathers office :) And now theres are generation of ppl who dont even know that Once there were balls inside mice Keyboardz and mice both didnt use the usb Hdmi was a thing of vv distant future :) Pendrives were like the most advanced tech to be seen :)


War-Hawk18

Oh my god, I am only 22 and I am feeling old already.


Significant-Deer7464

Not much these days


jussuumguy

A Serial Cable with RJ Link? It's probably for older equipment that would be used in Laboratories, Hospitals or Industrial Equipment. It is also used with older networking equipment.


Bigglestherat

Sweet summer child


Careless_Ferret_3299

i feel old AF


_Yoloninja_

its a type of cable I know as a console cable. seen it on really old switches and networking gear for administering it locally before you get a remote admin option available, like first boot. its just a fancy serial cable, but hold onto it. I already know you'll use it exactly once, but it will absolutely save your life when you need it


TamaraJasmine0

A comms cable to connect to something that has a built in io interface for configuration.


Apprehensive_Fix_320

RS 232 serial that one


theheckisapost

I had the same for some old ups, and some switches, also seen some old timey barcode scanners with this. Reliable, but not gonna cry, if i newer use it again.


Aesthetic6969

to what is going on in the router via a monitor (i am joking i have no idee)


LD_weirdo

I've seen a similar cable on a steering wheel game controller. It was used to connect the pedals to the wheel.


ShasasTheRed

It's there to confuse, mystify, and piss off those who find/use it


Sup3rphi1

Basically the really really old version of usb. If you don't know what it goes to you probably don't have a use for it anymore


theoz10

Both of those are used in some of my old Logitech steering wheels and joysticks


Competitive-Art-8046

Its for serial connect to device with RJ connection


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mcaines75

It's not a vga connector. It's a serial cable.


jmbieber

I work with industral control systems, and we use this to connect a thermal printer to an HMI display interface that connects to a PLC


Ok-Wrongdoer-4399

That’s how you enter the matrix in legacy mode.


Outrageous_Cupcake97

Isn't that a rollover cable? Used a lot to connect to console ports on networking equipment like cisco routers and switches.


AllTubeTone

As others have said, it is a serial cable, another use other than Point Of Sale hardware is a battery backup unit (UPS) to control graceful shutdowns to the computer when power cuts out.


PurpleGoatNYC

First of all, fuck me, I’m old. It’s a peripheral interface for those LCD stick displays on cash registers. Could also be used for barcode scanners, ticket printers, cash drawers (sending an open signal to them and logging times that the drawer was opened), and lots of other niche uses.


Distance2Tree

Kvm


Gal-XD_exe

It’s not just the drawer that’s old…


Hayden_Fixes

A Saab Tech 2 uses one of these cables. However, the end is RJ45, not RJ11.


Nucleardylan

Serial cable for huge number of devices. I don't see anyone mentioning that it can be for an inverter as well, so thought I'd drop the comment


Vegetable-View-602

That's possibly for an old rs232 handheld barcode scanner, being db-9 and rj-11(?) on the other end. Sometimes these came with old switches to program them, however the size of the rj connector makes me doubt it a little Back in the day there was also a few CAD mice, modems, and really friggin old crt (vt220?) Terminals that took these. But the black plastic makes it more "modern" circa 2000's....everything was grey or beige in the ancient times bc of the "natural" colors of the plastics used


Epim123

Mouse


Jim-Jones

Maybe a UPS monitor cable?


L1LM3NKY

I’ve always seen it referred has a vag cable


SynnLee

Yes, the vagina cable. You're right.


Tepppopups

Serial console cables are used for industrial equipment configuration.


vinayrajan

very old cable, used to connect serial port to your fixed landline telephone. used mainly for a fax modem


ELementalSmurf

So that you can display your internet connection on a monitor obviously /s


Zahkrosis

You're not entirely wrong


Baddoggogames

I legit didnt see the other end of it and i was like "no fuckin way im this old"


Yiyun

serial cable for a pdu


DrachenDad

Basically ~~display~~ data over network, it is used for remote ~~screens~~ consoles.


Weardly2

DB9 to RJ45 cable


Zahkrosis

First of all: fuck you, I'm not old. Second of all: It's an RS232-RJ11 to DB9 cable. We call them terminal cables over here. They allow for a local connection from an external station to a serial interface of a network device like modem/telecommunications via PC. We've primarily used them for terminals or telescopes.


Both_Advice_2

DE-9. Strictly speaking, DB-9 doesn't exist.


Zahkrosis

No one asked. DE9 refers to size (and pin/hole count), while DB9, although technically being a misnomer, is something everyone understands. So it is a DB9, while not being *a* DB9.


PSYCHOsmurfZA

It was the first VoiP cables released that included video conferencing.


paper-glue

It's a VGA to ether....wait whaaa..


SynnLee

Probably connects two things together.


Myles_Version21

A printer and a broadband router got together and made that cable


nemis16

Serial cable


Vichu0_0-V2

Bruh.... I thought everyone knew bout this feeling old (im 23)


MooseNew4887

If not VGA,why VGA coloured? At least this one makes some sense. I have a cable that's RJ45 to USB. It fits perfectly in an RJ45 port, but it has only 4 wires connected and no active electronics in it.


Potential_Fall_1050

you can connect this to your laptop with tv or LED


Cheeseninja26

To connect one electronic device to another to transmit some form of data.


fmuldermm

Seeing this question asked makes me feel old….


thedndnut

It goes from a point of sale machine to the till to unlock and open it.


ReallyPissedStranger

This is an incense stick holder, pretty handy can hold a lot of them separately.


IO_Timmiey

Holy shit im old


SkabKid

I use these for a PDU (PDU41001)


GageVVV

Im only 22 and this made me feel old


YogotAim

this cable is to hook up your router to an monitor (this is false its an joke)


Br4veSirRobin

VGA?


alchoholisremedy

Data Com port - telephone jack wall plug


Swimming-Disk7502

It looks like a VGA to RJ-sth cable. Pretty weird for a port specialized in network transfer and a port dedicated for image export to be in a single cable.


Traditional_Excuse46

not as fun as parallel port networking. Connecting two PC via printer port.


J3D1M4573R

It is a console cable. One end is a standard COM connector that would connect to a terminal port on whatever piece of equipment it goes with (typically cisco switches). The other end is ~~RJ45 to connect to ethernet~~ RJ11 to connect to a modem port on a PC. It allows the PC to access the devices console (command line) to manage its settings.


Slow_Monk1376

Looks like serial cable for apc pdu.. heh


ThievishGoblin1

Gen 1 hdmi


Cherry_BaBomb

Damn I feel old.


CastawayPickle

Cann communication between car computer interface and laptop computers. Pcan explorer and similar software.


Tony-2112

Making me feel old


CompetitiveCod7777

Look inside your router’s soul?


Select_Section1700

It is an old VGA Cable for Connexion to onder videomonitor.


DM_ME_GAME_KEYS

it displays the ethernet


Lokisblade

The times before digital monitors


Helpful_Stick_2810

someplace to use the dvi adapter :)


WhoWouldCareToAsk

It’s not a DVI cable; it’s a DB9 with RJ11. Likely used in some POS machine or something like that…


alty-acct-throwaway

hey that's no way to talk about the machine! /joking


WhoWouldCareToAsk

I know, right! When the “pos” was promoted to slang I was wondering why are they talking about point of same terminals all the time 😂


Helpful_Stick_2810

I stand corrected, I thought it was a vga cable.


Mr-_-Muppet

To plug into stuff….. 😐


i_dont_care_for_you9

~~VGI that you plug into pc and monitor or pc and projector, it have 2 screws you need to screw when you plug it~~


i_dont_care_for_you9

NVM im dumb and blind


AffectionatePack3647

Is thin question for real lol


Mobile-Meaning3759

Isn't this VGA,or am I dum?


theablanca

That's not VGA, not enough pins. That's a serial connector.


Mobile-Meaning3759

You're right, there aren't enough pins. Thanks.


BillyGaming2021

No, no your right


waffle911

No he's not, only 9 pins, it's serial


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waffle911

Not enough pins on either plug. It's a 9-pin Serial to 4-wire RJ11 (phone connector). A lot of old devices that needed more compact connectors than 9-pin would use serial over RJ11 to communicate with the host controller or computer.


ZENESYS_316

A monitor cable. Haha I have that connected to my 16 year old PC and monitor


underprivlidged

No.


ZENESYS_316

I can prove it


underprivlidged

Except you are wrong.


ZENESYS_316

Brother... I literally have that cable plugged in rn in my PC with my monitor :/


underprivlidged

Except you don't, Did you even see the connections on it? Your PC has a RJ11 jack for a monitor? I know it doesn't.


ZENESYS_316

Yeah right I don't even know what these are called bruh... I just know I have THAT blue oort plugged in to my monitor,the other end connected to my PC, that's all


underprivlidged

One port does not make a whole cable. Moreover, modern VGA has 15 pins, not 9. This is a crossover cable that was never and will never be used for a monitor.


ZENESYS_316

Wait...pins! That's it! I just gotta check if its 9 or 15! ...wait...modern VGA cables has 15 you say? So like, I won't be able to use my current 16 year old monitor on the PC I'll be building?