Macbook pro thunderbolt 2 to usb c

I have a Macbook pro 2015 with Thunderbolt 2 and a new Philips widescreen monitor 346B1c/00 with a hub for USB A and Ethernet. It has an USB C connection at the bottom.

Can I connect my USB C from my monitor with the USB C to Thunderbolt 2 adapter from Apple and then a Thunderbolt 2 cable to my Macbook and will it then connect all the data like the screen itself, the hub and so on to my Macbook?


MacBook Pro 13″, macOS 11.7

Posted on Jun 26, 2023 12:51 PM

Reply
Question marked as Top-ranking reply

Posted on Jun 26, 2023 8:42 PM

https://www.philips.co.uk/c-p/346B1C_00/curved-ultrawide-lcd-monitor-with-usb-c


That monitor has USB-C (DisplayPort, USB), DisplayPort, and HDMI inputs. It is not a Thunderbolt monitor.


Apple does not make a USB-C to Thunderbolt 2 adapter. They make a Thunderbolt 3-to-2 adapter, which has a USB-C plug on the Thunderbolt 3 side, because Thunderbolt is one protocol that can live on a USB-C connector. That adapter is bi-directional but only translates Thunderbolt protocol. It will not generate a USB-C (DisplayPort) signal on the Thunderbolt 3 side, of the sort that the Phillips 346B1c/00 is expecting. It also will not carry power from one side to the other – just Thunderbolt-format data.


If someone told you to use that adapter for connecting that monitor, they don't know what they're talking about.


I don't know, offhand, of any Thunderbolt 2 to USB-C (DisplayPort, USB, USB Power Delivery) adapters that will do what you want. I think that you're looking at several cables:


  1. A Mini DisplayPort to DisplayPort cable, running from the Thunderbolt 2 port on your 2015 MBP (which has a Mini DisplayPort connector, and can double as a Mini DisplayPort), to the DisplayPort input on the monitor.
  2. A USB-A to USB-B cable, running from one of your 2015 MBP's USB-A (USB 3) ports to the upstream USB-B port on the monitor.
  3. A MagSafe 2 cable running from your 2015 MBP's MagSafe 2 charging port to your Apple power adapter.



Similar questions

7 replies
Question marked as Top-ranking reply

Jun 26, 2023 8:42 PM in response to Lucas7678

https://www.philips.co.uk/c-p/346B1C_00/curved-ultrawide-lcd-monitor-with-usb-c


That monitor has USB-C (DisplayPort, USB), DisplayPort, and HDMI inputs. It is not a Thunderbolt monitor.


Apple does not make a USB-C to Thunderbolt 2 adapter. They make a Thunderbolt 3-to-2 adapter, which has a USB-C plug on the Thunderbolt 3 side, because Thunderbolt is one protocol that can live on a USB-C connector. That adapter is bi-directional but only translates Thunderbolt protocol. It will not generate a USB-C (DisplayPort) signal on the Thunderbolt 3 side, of the sort that the Phillips 346B1c/00 is expecting. It also will not carry power from one side to the other – just Thunderbolt-format data.


If someone told you to use that adapter for connecting that monitor, they don't know what they're talking about.


I don't know, offhand, of any Thunderbolt 2 to USB-C (DisplayPort, USB, USB Power Delivery) adapters that will do what you want. I think that you're looking at several cables:


  1. A Mini DisplayPort to DisplayPort cable, running from the Thunderbolt 2 port on your 2015 MBP (which has a Mini DisplayPort connector, and can double as a Mini DisplayPort), to the DisplayPort input on the monitor.
  2. A USB-A to USB-B cable, running from one of your 2015 MBP's USB-A (USB 3) ports to the upstream USB-B port on the monitor.
  3. A MagSafe 2 cable running from your 2015 MBP's MagSafe 2 charging port to your Apple power adapter.



Jun 26, 2023 9:04 PM in response to Lucas7678

Lucas7678 wrote:

Ok, so do you mean no data can be send from my Macbook to the Monitor and also not from Monitor to Macbook?
Won't the possibilities that Thunderbolt 2 delivers will be used?
Thanks for the answer in advance!


I can think of an arrangement that might allow for a single-cable connection to the 2015 MBP – but this would require additional hardware.


Get a Thunderbolt 1/2 dock that

    • Has a DisplayPort, Mini DisplayPort, or HDMI port
    • Has one or more USB-A ports
    • Can deliver charging power, over Thunderbolt 1/2, to your 2015 MBP


Connect the monitor to the dock's video port, and to one of the dock's USB-A ports.


Connect the 2015 MBP to the Thunderbolt 1/2 dock with a Thunderbolt 1/2 cable.


The biggest problem with this approach, aside from the cost, is that it may be difficult or impossible to find a new Thunderbolt 1/2 dock. Everyone's moved on to Thunderbolt 3 or 4. If you got a Thunderbolt 3 or 4 dock, you'd lose charging power to the monitor (since that wouldn't pass through a TB3-to-2 adapter).

Jun 26, 2023 8:54 PM in response to kaz-k

kaz-k wrote:

Hi,
Yes, I mean so, there is USB-C to Thunderbolt 1,2 adapter or cable, though there is no Thunderbolt 1,2 to USB-C adapter.

There is no adapter from generic USB-C to Thunderbolt 1 or 2.


USB-C is a "Swiss Army Knife" connector that can potentially carry all sorts of stuff – USB Data, USB Power Delivery, DisplayPort signals, and Thunderbolt signals. I believe that Thunderbolt is a relative of PCIe. While Thunderbolt is not as fast as a 16-lane PCIe slot, it potentially has much the same flexibility as PCIe slots do. Other protocols that run over USB-C don't necessarily have that flexibility.


Think of it this way: You can get PCIe cards for PCs that add USB ports. But have you ever heard of a USB device that added external PCIe slots to a PC? Thought so…


The adapter is from Thunderbolt 3/4 to Thunderbolt 1/2. It translates Thunderbolt data only. It works in both directions, so theoretically you could use it to attach a Thunderbolt 3 dock or hub to a TB2-equipped Mac … assuming that the lower data rate was fast enough for what you were doing, and that there were not any other compatibility issues.

Jun 26, 2023 4:00 PM in response to Lucas7678

ThunderBolt-2 is great for running a display. Other things, not so much.


MacBook Pro 2012 and later models feature at least USB 3.0 with a USB-A shaped connector with nine pins, Apple just did not choose to make it Blue.


You can connect from one of the USB 3.0 type-A port out of your MacBook Pro 2015 computer through a USB-C adapter to the display USB-C input, and run it at its maximum 5,000 M bits/sec or about 500 M Bytes/sec.


That is fast enough for Gigabit Ethernet, or connecting most SATA-based external drives. For most uses, it will not impede your data speeds (except very fast NVMe enclosures with SSD drives will be slowed slightly.)

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Macbook pro thunderbolt 2 to usb c

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.