USB power module and 41CL update

[Sylvain Cote]

Acronyms:

• FN = fullnut (removable motherboard)
• HN = halfnut (cost saving, cpu soldered on keyboard PCB & other enhancements)
• TK = tall keys
• BN = blank nut (most keys have no marking on them, hence blank)
  

Possible combinaison:

• FN-TK -> 41C, CV rare or very rare
• FN -> 41C, CV & CX
• FN-BN -> 41C, CV & CX
• HN -> 41C rare, CV & CX
• HN-BN -> 41C very rare, CV & CX
  

edit: modified after Patrik (CY-CL) comment.