Hobbywing 3 in 1 Professional Multifunction LCD Program Box it can work individually or connect with PCSetup your favorite model like a Pro Team Engineer To fully unleash the power of Hobbywing ESC, this Program Box is a must-have. You can quickly access option menu in the ESC & make the best setup like Start-up mode, brake force, no. of battery cells, etc. If you want to do it the " Hi-Tech" way, you can connect the ESC to this Program Box, then use the USB (Universal Serial Bus) cable to connect the Program Card to your PC, with the CD-ROM that came with the Program Box, you can view detail info & adjust ESC settings just like a real engineer in a " Pro Team", looks fancy & very efficient. Description: Displayer: 16x 2 characters LCDInterface: Mini USB (Universal Serial Bus) interface, ESC interface, Power supply interface Power supply: DC 4.5V to 12.6V (If the ESC hasn't a built-in BEC, you must use an additional battery pack to supply the program box) Weight: 84g Dimension (mm): 90 x 51 x 17 Suitable for: XERUN Series Car ESC (V2.0 / V2.1), EZRUN Series Car ESC (V2.0 / V2.1), PLATINUM Series Quadcopter/ Aircraft ESCWorking Modes Works as an individual device to set the ESC, the value of each parameter is displayed on the LCD screen. Works as an USB (Universal Serial Bus) adapter to link the ESC with a PC to update the firmware of the ESC or set the ESC by HOBBYWING USB (Universal Serial Bus) LINK SOFTWARE. Works as a Lipo battery voltmeter to measure the voltage of the whole battery pack or each cell. The programmable items for the RC-CAR ESC are: Running Mode Drag Brake