Mac hardware
Do M1s have Thunderbolt 3 or 4?
Q Does my M1 iMac have two Thunderbolt 3 or 4 ports?
by DARREN MILLER
A Strictly speaking, the two Thunderbolt ports on M1 Macs are Type 3 with added support for USB4, which is one of the requirements for Thunderbolt 4. Apple’s wording isn’t as precise as it could be, referring to ‘Thunderbolt/USB 4’, which appears ambiguous.
The main requirements for Thunderbolt 4 over those for 3 include support for USB4 (whose official name doesn’t have a space), a
