
I buyed a Reprap Ramps 1.4 RRD Fan Extender from Geeetech (Reprap Ramps 1.4 RRD Fan Extender is marked with the text Geeetech.com) on Aliexpress, instead from geeetech.com.
Why ??? just for the price difference and its the same product.
BUT when i look for the specifications on the internet, i was warned the power cable is reversed; he picture of Geeetech is wrong
Just to avoid to blow up the Fan Extender, what pins i must use for the power connections, and, how to is the order of the pins ?
They aren't marked on the pcb, nor vcc or ground is marked..........
http://prntscr.com/c7fak5 ==> picture from Geeetech
http://prntscr.com/c7fa4d ==>Wrong cables ???