This is a DP16K Data Storage Module for Futaba 3PJS, 3PK & 8UA/UH Radios. Module holds 16k of information, enough space for 8 additional complete models. Will also work on the Futaba 9C radios This module simply plugs into the transmitter. INCLUDES: One Compac DP16K, 8 Model Storage Module (for 8Us) 6 Model Storage for (9C) 10 Model Storage for (3PK) 8 Model Storage for (3PJS) SPECS: Storage Space: 16K ir/jl updt jxs 4/23/03