Gearmo USB to 3.3v TTL Header like FTDI TTL-232R-3V3 with Windows 10 Support

The spec says the power pin VCC is 3.3v, but one reviewer says only the data pins are 3.3v and VCC is 5v. Is this true? I need full 3v3, no 5v at all.

Is there a recommended way to connect/disconnect the cable from the header on the board? I am afraid I might damage the board by using too much force.

How much current can the 3.3v VCC supply (normal operation, not absolute maximum)?

how long is this usb line? i really need to know this.