A bit of background; the amateur theatre I'm still involved with has replaced its 12-channel Echo AudioFire cards with Focusrite Scarlett 18i20s (with an extension card for the main house) - total overkill for our needs, but hey, that's progress, & Echo got out of audio a while back, so there's no support for the AudioFires. Someone is taking a show to Brum next week & wants to take one of the Scarletts out of a rack, which seems a really, ready bad idea, so the suggestion was to make up a travelling kit with a laptop, one of the AudioFires & (as we've found that modern laptops don't seem to come with 1394 ports) a USB - 1394 cable. Unfortunately, like many electronic items on the well-known shopping sites, they don't work, so it looks like the options are buying or hiring another Scarlett, or buying a cheap refurbed Dell to use with one of (beautifully simple) AudioFires.