Trimble TDL 450L / HPB450 Programming Cable Configure and manage your Trimble TDL 450L or HPB450 UHF data radio with this genuine Trimble programming cable. Designed to connect the radio to a computer's serial port, this 1.8 m (5.9 ft) cable also features an SAE power connector, allowing the radio to be powered from an external power source during programming, firmware updates, and diagnostics. Key Features Designed for Trimble TDL 450 and HPB450 UHF data radios. Connects the radio to a computer's serial (DB9) port for programming, configuration, and firmware updates. Integrated SAE power connector allows an external power source to be connected while servicing the radio. Genuine Trimble programming cable engineered for dependable communication and long-lasting field performance.