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I have to work with a scientific camera and acquire images via Ethernet on a MacBook Pro 2019 with 4 Thunderbolt 3 ports.

I have a USB-C to Ethernet adapter, and I have to enable jumbo frames (9000 byte MTU), but it seems not possible with USB-C in contrary to Thunderbolt 3.

I cannot find any adapter to convert Thunderbolt 3 to Ethernet though.

Any solution?

  • I'd expect the QNA-T310G1T to work...the hardware specs don't mention jumbo frames - but in the linked video (at 23:48) it's obvious that they are supported. – klanomath Nov 20 '19 at 17:01
  • Thanks for this reference. I was just wondering why the same adapter enabling jumbo frames on a Windows pc cannot do the same on a MacBook Pro. – Mattia Fontana Nov 21 '19 at 18:47
  • You mean the USB-C to Ethernet adapter you already own? Missing feature in the driver, I guess – klanomath Nov 21 '19 at 18:50
  • Yes exactly, I tested the adapter I already own and it works perfectly, with jumbo frames, on a Windows pc, while on the MacBook the MTU is limited to 1500 byte. – Mattia Fontana Nov 21 '19 at 18:57

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