All new ProVu meters come equipped with onboard USB and MeterView Pro programming software standard.
This accessory is useful only if you intend to use it in conjunction with MeterView Pro data monitoring feautres.
The PDA8008 ProVu USB serial adapter is a USB adapter for use with the ProVu when only serial communications is required for MeterView Pro running on a PC.
USB and meter-to-adapter cables are included.