E104-BT40-TB User Manual v1.01. Introduction1.1 Feature introductionE104-BT40-TB backplane adopts USB interface, which can quickly test theE104-BT40 Bluetooth related features and functions.1.2 Electrical parametersNo. Parameter name Parameter value Comment1 Support module E104-BT40 Dual-mode Bluetooth to serial portmodule2 Module process With USB connector3 Production process Lead-free process, SMT Batch consistency and reliability areensured via SMT