COMPATIBLE WITH: for Fujifilm XA1, XA2, XA3, XA5, XA7, XA10, XA20, XE1, XE2, XE2S, XE3, XH1, XM1, XPro1, XPro2, XPro3, XT1, XT2, XT3, XT10, XT20, XT30, XT100, XT200, HS30EXR, HS33EXR, HS35EXR, HS50EXR, X100F, X100V, X-S10 Camera. ^^ Intelligent analysis within five seconds after the "QC pro cable" is energized, based on the smart output of the camera's required operating power. it is more suitable for the momentary power demand of the camera shutter. ^^ When we disconnect the USB power supply, the usb drive cable will have a short Slight" squeak" noise for a short time, which is a normal phenomenon of the Farah capacitor discharge. ^^ When "PRO usb cable" plug into an ordinary USB powered interface (If not qc 2.0 /qc 3.0 ), his voltage will be intelligently analyzed as a 5V output. Multimeter test no-load Non-operating voltage is 9V. ^^ Recommend that users use high-quality mobile power bank, or other brand power bank supplies use chips that support large current discharges, such as the 10A switching current of the TI chip TPS61088, fits instantaneous high power needs of the camera.