Need USB-C/Thunderbolt to Firewire 800 adapter
I have been advised to obtain a USB-C/Thunderbolt to Firewire 800 adapter but can't find one anywhere!
My goal is to put an iMac 27", Mid 2010. (iMac 11,3) with a Firewire 800 port into Target Disk mode and connect it to my MacBook Pro (15-inch, 2016) (MacBookPro13,3)
I found this:
Apple Thunderbolt to FireWire Adapter
https://www.amazon.co.uk/gp/product/B008RXYOKY/ref=ppx_yo_dt_b_asin_title_o00_s01?ie=UTF8&psc=1
.. but it's the wrong version of Thunderbolt so won't plug into the MacBook Pro.
(MacBook Pro is Thunderbolt 3.)
Can anyone guide me to the cable I need?
Thank you.
MacBook Pro 15″, macOS 10.15