Summary: Post-purchase emails with Thermaltake say "The keyboard by specification can handle up to 24 keys but each press and depress of the key counts as a stroke. So a total of 12 keys with a total of 24 keystrokes is the limit." They claim that they are "under the mercy of our supplier at this point", which has not provided a firmware fix.
Summary: This review is based on the macro keys system of the keyboard. I returned the keyboard the next day so I can't offer much input as to other features. I will say the space bar is awkwardly place a bit far to the left. The large "Tt" lighted logo on the front is far too bright and I can't imagine anyone using it in low light conditions, which is when you'll want to use the lighted keys. Fortunately you can turn the logo off independent of the key lighting.
Summary: I had this keyboard for just over a year and now all of a sudden it has broken a few days after the warranty is over! :-/ I am not one for conspiracy theories but it's a bit too convenient for me that it should break 3 days after its out of warranty. I am using a £10 keyboard to write this review which i have had 2 years on another PC why can't companies make stuff to last anymore? its like they are hellbent on waste and making more money.