Adapter for iMac second monitor

[AcesHigh87]

My friend is going to be giving me his old computer monitor so that I can run a dual monitor on my 2011 iMac for editing purposes. Naturally I appreciate this but want to make sure I get the correct adapter for it.

It's an old monitor and can only do 1650x1020 resolution but that will do for me since the iMac screen is still going to be my primary. I believe that the monitor can only handle VGA so HDMI is out the window. Is this the correct adapter for the current iMac's to VGA?

If so, would any adapter like this work? I would really rather not have to pay $30+ just for an adapter when I could probably get one half that price from amazon or something.

Thanks in advance.

 

[simsaladimbamba]

Yes, that adapter will work, but you can also use one from Monoprice:

Mini DisplayPort (MDP) / Thunderbolt

Mini DisplayPort is the current digital standard on all current Macs to transfer video to an external display or TV. It has been introduced in 10/2008 with the release of the Unibody MacBook and MacBook Pros and has gradually been adopted on all other Macs.
MDP is capable of transmitting video, and since 2010, audio too. MDP is a miniaturised version of DisplayPort. It is also license free and can support resolutions of up to 2560 x 1600, which Mini DVI and Micro DVI are not able to do.
Since 2011, all Macs come with a Thunderbolt port, which is meant for fast data transfer and also as means to connect to an external display device to mirror or extend the Mac's screen.

To learn more about Thunderbolt (TB) and its compatibility with Mini DisplayPort (MDP): Introducing Thunderbolt​

MDP adapters and cables can be bought online from:

Apple Online Store (or the physical Apple Store)

• MDP to VGA adapter
• MDP to DVI adapter
• MDP to Dual-Link-DVI adapter
• Moshi Mini DP to HDMI Adapter with Audio Support adapter

Monoprice

• Mini DisplayPort + USB to Dual-Link DVI adapter
• Mini DisplayPort to DVI adapter
• Mini DisplayPort to VGA adapter
• Mini DisplayPort to HDMI adapter
• Mini Displayport Male and USB Male/Toslink Audio to HDMI Female Converting adapter
• Mini Displayport Male and USB Male Audio to HDMI Female Converting adapter - *NOTE* Will only support 2 channel stereo. Will not support 5.1 Dolby Surround like the above adapter.

• Mini DisplayPort to Mini DisplayPort cables
• Mini DisplayPort to VGA cables
• Mini DisplayPort to DVI cables
• Mini DisplayPort to HDMI cables
• Mini DisplayPort to DisplayPort cables

Also of interest: "What is "Mini DisplayPort"? Is it an industry-standard? How is it different from or better than Mini-DVI and Micro-DVI?"
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