Opa glr, criei uma conta aqui só pra ajudar vcs, tem um conversor vendendo na pichau, vi uns review e parece ser bem eficiente
https://www.pichau.com.br/hub-deepcool-gamer-storm-conversor-rgb-5v-para-12v-dp-frgb-chub5-12v?gclid=Cj0KCQjwnqH7BRDdARIsACTSAds3aHOrA72GlixoFtHWKUNu6rRBo7oUBsK0LqyZcblYJadiCk-bdWwaAufpEALw_wcB&__cf_chl_jschl_tk__=3c5c77c87507f1c59f5733afcec8e239638db967-1600738139-0-AWe9DgWXG9ZKGGlyqz4Jm0SD3i62EP0Mh7eHyWI0fsL6D8VK0r_SFsNTVXvLggTXGZnOx2vX-YFweucbiNn6w6wNsec0t03qmwqH51AWo9Aw9cbtg8YLtHR_t49gOYo6Lf7yl5DcuXOnCUNdyHkXyrGs997JIjFpjXK5aQLXYCk1A0fX7XrLCofNHElQlYdKBUcKQ1x63iKizUT7_J1zZMZyT6H1WEN_JSmJIlVW4WCUug0ejIvUuj-2i50x8R1yq6C2MkDo_v-bRpL-c_SChIv6gRbhgUm_JlL_u7Laqt4Bkpy96kMjgHdZ5iWAeWYPNKMu7geiBdr1Z3JCoVI2vPiXl4BkKHFJ_U7WU3kHcgYctG7tvUjQbrire8TxfWGSIh7KxU2f_Sf4i6z0M7f9w0E7NC8dPlJzJnnDmcBrpTudL18DfqkfC_IPCjbXEZnfXnqvGuOP9_-OUZ9WpBnT9mPL1Qa_oMHdvRP_1RyRBQipFTIR9kCuYLfTK2P4lVBdCw