Q: How do I connect a MacBook Pro with a wire to a Canon Pixma MG7752?

I suggest that you first read the documentation that came with the printer. Then go to Canon's support site and seek help from their tech support.

Did you download and install the latest printer driver for use with their OS version? It must be installed on their computer. You need to check at the Canon site for a compatible driver to use on their computer and version of OS X. If that computer has Wi-Fi, then they should be able to connect to the printer. You can also try Printer Sharing from your computer to theirs.

If that is the case, then they need to upgrade OS X if they can to at least Lion. Printer Sharing is indeed safe. OS X- Using printer sharing between different versions of OS X.

You can purchase Lion at the Online Apple Store. The cost is $19.99 plus tax. You get an email containing a redemption code to use at the Mac App Store to download Lion. Save a copy of that installer to your Downloads folder because the installer deletes itself at the end of the installation.

System Requirements:

1. Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor
2. 2GB of memory
3. OS X v10.6.6 or later (v10.6.8 recommended)
4. 7GB of free disk space
5. Some features require an Apple ID; terms apply.

There may be a method known as Bonjour printing where the wi-fi card in most any

product can be used wirelessly with printers. And I mean older OS X before 10.6.

About your folks Mac and system upgrade; you should identify the computer model

more exactly so as to be able to tell what suitable system (or option) may exist if

the item is new enough to be able to get & use Mountain Lion OS X 10.8. This is

also a purchase from the Apple Store online and involves buying a download code

to get the item later, online. You cannot get Lion or Mt. Lion from the App Store.

If the computer could use Mountain Lion, it may also need a RAM upgrade to have

more active memory (if it can see more in an upgrade of memory chips) but we have

no way of outwardly knowing any of that, without a bit more details.

Some printer manufactures may show drivers for older computer systems in their

support site for download. A later upgrade version of OS X may have more options.

Hopefully you can get a printer to work.

The 'easy setup' sometimes is easy with a new printer. And some of these do allow

almost anything to print from them without drivers. However I found drivers for a

newer printer, to work with my old Leopard 10.5.8. It connects wireless & by USB.

Good luck in this matter!

You have to have the software installed in order to properly work with or without cables. You need to update the os in order for the printer to work.

There are a few conditional options outlined here:

• Connect an AirPrint printer to a Wi-Fi network - Apple Support

Does look like the older MacBook Pro will need a system upgrade to new

later version than OS X 10.6.8 Snow Leopard, by looking into Canon

driver support for that All-In-One printer combination unit.

Some older Macs running OS X 10.5.8 that I have do not need drivers

because of the workaround that exists by using a wireless setup. I also

can use a wired USB one because I found some older drivers that still

work with newer printer model. Third party drivers may not be available.

So if the computer needs a hardware upgrade to handle a newer OS X,

then that is something to consider along with ordering the Lion or Mt Lion

10.7.5 or 10.8.5 and updating either before getting new print drivers.

The Europe Canon support has a fair amount of detail; as does the US one.

Good luck in any event!

Apple Store online is where you buy the redemption code that works in the App Store.

• Lion OS X 10.7 - http://www.apple.com/shop/product/D6106Z/A/os-x-lion

• Mountain Lion OS X 10.8 - http://www.apple.com/shop/product/D6377Z/A/os-x-mountain-lion

Are available for purchase this way, as there isn't an App Store direct option.

You should find out and check details on which one best suits your interests

and realize you need not buy both, you only need 10.8 if your Mac can use it.

Either one or both require a purchase, and once they are bought, & the code

to redeem the purchase and download in App Store is successful, both of

these OS X systems do have addition step downloads (free) to the OS X for

the final step: a Combo file; either: Lion to 10.7.5 -or- Mountain Lion to 10.8.5.

The Combo update (requires 10.7 new system upgrade first) for Lion 10.7.5:

• Download OS X Lion Update 10.7.5 (Client Combo)

And Combo update (requires 10.8 system upgrade first) for Mountain Lion 10.8.5:

• Download OS X Mountain Lion Update v10.8.5 (Combo)

So the best route to check to see if the computer can run Mountain Lion 10.8 before

buying a redemption code; if it can, the 10.8.5 OS X is a better system than 10.7.5.

And then suitable applications or upgrades would need to be bought for the OS X.

{After either suitable update file is applied to the new OS X installed, also run

the software update (App Store) again to see what other updates may apply.}

Identification of the computer is essential to upgrade the hardware for later software

to run, & to tell the limits of the computer to handle newer most recent software in it.

Details on How to Identify the Computer & the last supported OS X with these sites:

• How to identify MacBook Pro models - Apple Support

The suggested total memory (RAM) upgrade mentioned here may vary from actual:

• MacBook Pro: How to remove or install memory - Apple Support

Apple MacBook Pro Specs (All MacBook Pro Technical Specifications - everymac.com:

http://www.everymac.com/systems/apple/macbook_pro/index-macbookpro.html

There are additional means, including  "identify by serial or model number" lookup:

http://www.everymac.com/systems/apple/macbook_pro/index-macbookpro.html

or https://www.powerbookmedic.com/identify-mac-serial.php

In any event...

Good luck & happy computing!