For PS4550 & PS3550
All PowerSight analyzers come with Bluetooth wireless communications, standard. The PS4550 and PS3550 also come with USB communications, standard. This nylon braided cable terminates with a micro USB, to mate with PowerSight analyzers for communications.
For PS4000, PS3000, & PS250
This adapter allows you to connect your PowerSight PS250, PS3000, or PS4000 to a USB connector on your PC. This overcomes the limitation of PCs that do not have an RS232 serial port. The attached cable plugs into one of your USB slots and the other end of the adapter plugs into the DB9 end of the PowerSight communications cable (COMM, included with the meter).