How to Put Keycaps Back on a Blank Ultimate Keyboard

Because the Das Keyboard 4 Ultimate and the 3 Ultimate, Model S Ultimate keyboards all have blank keycaps, there are no inscriptions to indicate where they should go on the keyboard if you remove them for cleaning. On the inside of the keycaps, there are small numbers that will dictate where the keycaps should go. The bullet points and image below have outlined the correct positions, with the *1.XX indicating the size in inches of the length of the keycap, and the yellow, underlined numbers indicating a bump on the key.

• Function row: R4
• Number row: R4
• Top Letter Row: R3
• Middle Letter Row: R2
• Bottom Letter Row: R1
• Bottom Ctrl, Alt, Fn, Spacebar Row: R1 

For more information visit this blog post on How to Reassemble Your Das Keyboard Ultimate.