Question - Connecting 2 thunderbolt displays

jameswdmb

macrumors member
Original poster
Jun 4, 2012
82
0
I have googled this and cant seem to get a direct answer anywhere. I have a thunderbolt display at home and a thunderbolt display at work. I have a project coming up where I could really utilize having both monitors together. Do I need to purchase a thunderbolt to thunderbolt cable to chain them together or can I just use the built in cable to join them together? Please advise.
 
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jameswdmb

macrumors member
Original poster
Jun 4, 2012
82
0
Lots of views but no response......anyone have an idea if you need the additional cable or will the built in cable work?
 

flynz4

macrumors 68040
Aug 9, 2009
3,131
37
Portland, OR
I have not tested with two ATD's. I only have one.

One thing that I noticed is that power does not seem to be supplied over the built in pigtales. Hence:

Using a bus powered device (ex: a portable TB HDD):
- Pigtale does not work
- Cable works

Using a self powered device (ex: Promise Pegasus R4):
- Pigtale works
- Cable works

From my experiments... I would expect that the pigtale would work since an ATD is a self powered device. Untested with two ATDs.

/Jim
 

raymondkerr

macrumors regular
Jul 6, 2008
210
35
Glasgow, Scotland, UK
I could be wrong, but I don't think you are able to daisy chain two thunderbolt displays together. I think you have to connect a thunderbolt peripheral to the first TB display then, plug the second display into the thru port on the powered peripheral, i.e. something like a TB hard drive, which makes running two TB displays extremely expensive.
 

Outrigger

macrumors 68000
Dec 22, 2008
1,760
93
I have googled this and cant seem to get a direct answer anywhere. I have a thunderbolt display at home and a thunderbolt display at work. I have a project coming up where I could really utilize having both monitors together. Do I need to purchase a thunderbolt to thunderbolt cable to chain them together or can I just use the built in cable to join them together? Please advise.
if you use the existing built in TB cable to connect to the other display, how will you connect to the first display?
 

blevins321

macrumors 68030
Dec 24, 2010
2,759
78
Winnipeg, MB
if you use the existing built in TB cable to connect to the other display, how will you connect to the first display?
Display 1 to computer, display 2 to display 1? If you mean port-wise, the TV display has an extra TB port with no cable on the back.

And poster above mentioning requiring a device in between. This is partially correct but I think the OP's circumstances are the exception. I believe that you can directly daisy chain TB displays, but you have to have a device in the middle if the 2nd display uses only Mini DisplayPort.
 

Outrigger

macrumors 68000
Dec 22, 2008
1,760
93
Display 1 to computer, display 2 to display 1? If you mean port-wise, the TV display has an extra TB port with no cable on the back.

And poster above mentioning requiring a device in between. This is partially correct but I think the OP's circumstances are the exception. I believe that you can directly daisy chain TB displays, but you have to have a device in the middle if the 2nd display uses only Mini DisplayPort.
sorry, I have no idea what you're talking. What TV display?

the TB display has one open TB port and built in TB cable. The OP was asking if he could hook up the two TB displays without an additional TB cable. My answer was if he used the existing TB cable from #2 to #1, and use the TB cable from #1 to his Mac. He would not need an additional TB cable.

there is no TB peripheral needed.
 
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tn9design

macrumors member
Sep 8, 2011
55
1
Texas
I have googled this and cant seem to get a direct answer anywhere. I have a thunderbolt display at home and a thunderbolt display at work. I have a project coming up where I could really utilize having both monitors together. Do I need to purchase a thunderbolt to thunderbolt cable to chain them together or can I just use the built in cable to join them together? Please advise.
You don't need to buy anything extra as long as your computer has a thunderbolt port (which I assume it does), you can daisy-chain the displays to each other.

Here is a video I did a while back when the thunderbolt displays first came out. I run through the wiring explanation (although it's so simple not much is needed)

Good Luck.
 

iHeading

macrumors member
Nov 24, 2011
72
0
I am currently using 2 TD's connected to a retina macbook pro and you do NOT need anything else just plug 1 display to the computer and the 2nd display to the first with the cable the display comes attached with.
 

jameswdmb

macrumors member
Original poster
Jun 4, 2012
82
0
Thanks to all for the response. If it wasnt such trouble to transport back and forth I would have just tested myself. I did talk to a genius at a apple store and they did not have a direct answer either so your feedback is appreciated.
 

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