Why does my 2021 iMac M1 have only 2 USB-C ports?

I’m getting ready to sell my 2021 iMac 24” M1. In doing research I keep seeing ads for iMacs with 4 USB ports, but mine only has 2 USB-C ports and nothing more. I haven’t seen any other iMac M1 with only 2 ports. Have I got the only 2 port system there is?

iMac 24″, macOS 15.6

Posted on Nov 26, 2025 6:53 PM

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Question marked as Top-ranking reply

Posted on Nov 26, 2025 7:46 PM

The entry level ($1299) iMac M1 2021 does in fact have only the two Thunderbolt/USB-3 ports. These should be marked by a thunderbolt icon.

Two other tiers of that iMac have an additional pair of USB 3 ports.

24-inch M1 iMac buying guide: Everything you need to know. - macworld


iMac (24-inch, M1, 2021) - Technical Specifications - Apple Support


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Question marked as Top-ranking reply

Nov 26, 2025 7:46 PM in response to LazarusLong

The entry level ($1299) iMac M1 2021 does in fact have only the two Thunderbolt/USB-3 ports. These should be marked by a thunderbolt icon.

Two other tiers of that iMac have an additional pair of USB 3 ports.

24-inch M1 iMac buying guide: Everything you need to know. - macworld


iMac (24-inch, M1, 2021) - Technical Specifications - Apple Support


Why does my 2021 iMac M1 have only 2 USB-C ports?

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