Macworld:

FireWire is emblematic of everything that’s great about Apple as well as everything that’s not, and of a particular mindset among some Apple users.

It was technically hugely sophisticated, removing much of the burden for the data interchange from the main CPU; unlike USB, which required a host computer, FireWire was essentially a peer-to-peer networking technology, and it could transfer at full speed in both directions simultaneously, unlike USB.

But it was also, ultimately, expensive to implement, and although variants were supported by other companies (notably Sony), it struggled to get traction outside of the Apple ecosystem.

I have a soft spot for FireWire (I took delivery of the very first FireWire Drive in Canada). For those of us who remember not only the days of slow USB 1 but also back to ADB and (shudder) SCSI, it was a great way to move lots of data extremely quickly. I still have a bunch of FireWire cables I don’t have the heart to throw out.