Don't be surprised if it doesn't work right. I have a USB keyboard that was built with an industry standard USB keyboard controller chip. It works fine in Linux, but if you plug it into a Mac, the keyboard handler goes into an infinite loop. That bug was discovered several years ago and remains unfixed. paul On Sep 17, 2013, at 10:28 AM, Sampsa Laine <sampsa at mac.com> wrote: I forgot to clarify - I'm thinking about getting a old MAC keyboard which has loads of extra buttons that I'm sure the OS will pass through.. sampsa <sampsa at mac.com> mobile +358 40 7208932 On 17 Sep 2013, at 16:27, Sampsa Laine <sampsa at mac.com> wrote: I think I can remap the keys to send pretty much any escape code in Terminal.app. So as long as I have enough physical keys, I can 'emulate' an LK-style keyboar (Gold keys, PF1-4 etc). sampsa <sampsa at mac.com> mobile +358 40 7208932 On 17 Sep 2013, at 16:24, Mark Benson <md.benson at gmail.com> wrote: To do what? The OS won't support the keys and as a result a terminal from the host OS won't either. I am not 100% sure how SimH accesses the keyboard input and haven't tested a USB VMS keyboard with it. I fear the host OS won't map the keys forward? FWIW my AB552A is USB with a PS/2 adapter. Sampsa Laine <sampsa at mac.com> wrote: My idea is to plug one of these into a Macbook Pro with a USB adapter, failing that, could I just get a 100+ key USB keyboard, do some tweaking and relabel the buttons? sampsa <sampsa at mac.com> mobile +358 40 7208932 On 17 Sep 2013, at 06:29, Kari Uusim ki <uusimaki at exdecfinland.org> wrote: Might be worth to get one if you can manage to find one (for a reasonable price). HP's price is very high. Don't know if they still deliver them. I've tried to use the PS2-style LK keyboards connected through a PS2 - USB dongle with my zx6000 with no luck. Kari On 17.9.2013 6:12, Sampsa Laine wrote: Just saw this on HoffmanLabs, intrigued by the AB552A model. http://labs.hoffmanlabs.com/node/19 sampsa <sampsa at mac.com> mobile +358 40 7208932 . -- Mark Benson