Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Will this work on a macbook air? I have an external hard drive that connects via a firewire.
Document: This little item finally bridged the gap between my Firewire Hard Drives and Video Cameras, and my MacBook Air.
This product plugged into my old external hard drive and I was able to retrieve my lost data.That simple. Worked great.
It's exactly what I needed and arrived very quickly. I can now back up my Mac using my old Lacie external hard drive.
Almost had a heart attack when I couldn't fit my external hard drive connector to the back of my iMac. My external hard drive cord was larger than the port in the back of the iMac. Thanks goodness this converter doohickey exists. Works fine for me.
this adaptor plugged into my Mac Book Pro 2011 edition and allowed my older external hard drive to communicate with it
I have had my firewire 400 portable hard drive without being able to use it with my new macbook pro for a while now. This is a portable adapter that fits perfectly with my mobile HD. Strongly recommend this adapter!
I had some FireWire 400 drives that I wanted to use with my Macbook Pro with a FireWire 800 port. I ended up getting two of these adapters and have been pleased with them. I use them anywhere from 2-5 times a month to make back ups of my Macbook Pro hard drive.
This adapter works perfectly to connect my audio mixer to my MacBook Pro laptop (via an Apple Cinema Display). All the audio, mixer control, and recording apps work perfectly in the bidirectional FireWire communication mode without any issue.
This was the least expensive adapter I could find, and it does the job well. I attached this to an Apple Firewire-to-Thunderbolt adapter to capture footage from an old Hi-8 Sony Handycam video camera with my MacBook Pro with solid state hard drive. I've had it for a few months now, converting old tapes to digital.
Got a new MacBook Pro and had my old MacBook Pro on a backup 400 firewire Hard Drive with Time Machine Software.Connected the elago firewire 400 to the Apple Thunderbolt adapter. No problem at all. Just the same speed as before. Transfer with no problem.
Answer: This device is for firewire ports only.  If you have other cables or other connectors you maybe able to connect to the Macbook Air.  The Air only has USB or Thunderbolt ports.  You would need an adapter that goes from Firewire to USB or Firewire to Thunderbolt.  Put in those search terms to Amazon and you get a variety of connectors.  Apple makes one specifically for this application.  I hope this helps.