How to link printers to 2nd Mac?

WOW! Thank you! Just what I needed.

I'm waiting for ethernet adapter to arrive.

I am still blank/vague about placement/connection where to access/connect.

At present, one printer is ethernet connected to my MBP; it appears in SysPref>Printers on MBAir but OffLine

Second printer is ethernet connected to my router and appears on MBPro but not on MBAir

Both printers function normally from commands on MBPro. Neither functions from commands on MBA -- yet!

Everything going great!

both printers working at MBPro;

only monocrome LJ appears and prints on MBA

color LJ printer (still connected ethernet to MBPro)

But does not show anywhere on MBAir

Tried switch of ethernet cable from MBP to MBA --> nada!

--> I'm blocking

I switched the color LJ [LJC] ethernet cable off MBPro to the single router ethernet port

-- (which became open because i switched the monochrome LJ [LJM] ethernet out of router to the MBAir via ethernet-usb-c adapter.

That change made no difference in what was/is showing in MBAir SysPref for Printers and Network windows (even after a restart).

And I am still able to print from MBPro in spite of this change.

When I choose the Add Printer key on MBA, it doesn't show anything like your example above with long list; mine only showsthe single LJM printer and nothing else.

MacBook Pro is connected to your network by Wi-Fi. = correct

LaserJet color is cabled via Ethernet to the port on the Router. No longer because I changed it -->

--> it was connected to MBPro via ethernet to MBPro (I suspect that ethernet connect was not function

because there was a simultaneous usb connect which is still functional

but now it is connected to MBPro via usb and functional.

MacBook Air is connected to your network by Wi-Fi. = correct

Laserjet mono is connected by Ethernet cable (using adapter) to the MacBook Air. = correct

MacBook Air shows no Printers at all in its Add-a-printer page?

not correct but only because it lists only the LJ mono "connected by Ethernet cable (using adapter) to the MacBook Air."

OK my system now is as follows:

[1] busiest printer LJ mono is connected to MBAir via ethernet & usb-c adapter and is functional from both computers.

[2] least busy color LJ printer connected by both ethernet and usb to MBPro and is functional there only;

and I did check the Share LJ color on the network.

LJ color printer does not appear on MBAir at all.

And when I switch the ethernet cable of the color LJ from MBPro to the router ethernet port --> It makes no difference in result at all; it remains absent/invisible at MBAir.

Both computers networks iPv6 are Link-local only configured.

I greatly appreciate your extended assistance!

Jan Hedlund, thank you for joining the discussion.

I had reached an impasse. I'm no worse off than when I started.

Which was when I added the new MacBook Air 13" M2 chip 2022 running Monterey

with eventual intent to sideline my MacBook Pro 2012 running Catalina.

I have been Mac exclusive since late 1980. I am novice as to computers!

I always have had a strong aversion to doing things with Network/TCP/LAN et al.

I'm retired so this problem while frustrating has been kind of fun puzzle to work.

I will now cease & desist at this point and follow your recommendations.

Grant Bennet-Alder was Helpful and educational!

Like my router (a former Time capsule) my printers are older and there are much newer (?expensive) models.

So I am off the locate a Wi-Fi router with built-switch and 4 LAN ports.

Like my router (a former Time capsule) my printers are older and there are much newer (?expensive) models

I ordered/received the above router ASUS RT-N12 Wireless-N Router. Appeared to be perfect for my situation.

So turned it on and connected to my cable modem and the color LJ and the mono LJ printers by ethernet to the router:

Things seemed to be fine -- and then all **** broke lose (probably because I incorrectly clicked on some(?) key):

Biggest problem: It could NOT locate the wi-fi network I have used for years and universally!!!

With help from AppleCare I was able to access ASUS website successfully and proceed (via iPhone) -- including a username and [gawd help me] a password which I promptly forgot!!!! and have been completely bummed out at trying to retrieve/rectify since.

And the stuff in their manual/website has utterly useless in trying to rectify my mistake or proceed with setup

They manual indicates some necessary website is supported to open automatically(?) -- I have no info how -- to complete the setup.

So I am stymied at recovering my wi-fi network; I'm using some network that has been created by ASUS and is connected to internet via hotspot of my iPhone using this foreign network (but only on MBPro).

Its is working on my MBPro but NOT on MBAir.

Serendipitously Both printers are present on the MBPAir functional!

Both are listed on MBPro but NOT functional because both are Off-line.

[Why Apple won't let me stop writing Bold only Jobs know!].

I deleted the mono printer and then tried to add it back -- neither LJ is present in the Add window on MBP.

So with (partially functioning) new router I'm able to access internet (here) withMBPro via iPhone hotspot.

No internet connection via MBAir.

Both Printers functional from MBAir;

Neither printer functional from MBP.

Contacted ASUS who told me to re-set the router which I tried to do -- do not know if I succeeded or not.

I hope to be able to see Apple Communities tomorrow morning.

Spent some more time with AppleCare -- helped

Referred to ISP. But at time received a call from ASUS tech support who were very helpful in trying to solve this mess

BUT as nearing completion when trying to complete -- guess What?: Invalid user name and password X >10 .

As struggling that -- disconnected and have not been able to reconnect -- ASUS will call back in 24-48 hous

I think this product is good but setup manual is useless. Tech very helpful . . . .

Thank you both for reply!!!

'

At the moment it is near disaster:

I have NO wi-fi network -- I am accessing internet via iPhone hotspot from MBPro.

I spent hours yesterday with ASUS, twice they tried to lead me from resetting the router and made considerable progress, then each time something went wrong and no fix ever reached.

They sent me a long email today again describing the correction process -- haven't had time yet to read and undertake the task

And have now seen your valuable replies but again have not had time to start and work through.

I will work with all info/procedures suggested as best I can - I am no computer jock, obviously -- I am still exhausted, but you all have restored some hope.