Thunderbolt 3 USB-C to Thunderbolt 2 Adapter

Lacie 6big with Imac late 2015

I recently bought a Lacie 6big with Thunderbolt 3 for my iMac 27″ late 2015. I wasn’t aware of the lack of incompatibility.
At the moment I am connected via the USB 3.1 (in the lacie) and the regular USB port in the mac (with the usb 3.1 cable I guess)
The speed test performed with the black magic disk speed test is as follows:
write 322.6
read 293.3

What do you suggest I should do to be able to up the speed?

As long as your external device has its own power you can use Thunderbolt3 to Thunderbolt2 adapter. This should fix the speed problem.

Thunderbolt2 speed is: 20 Gbps

USB3.1 gen2 speedis : 10gbps

USB3.0 speed is: 5gbps









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