I have a new nRF52 Preview Development Kit, after connect it to a computer with a USB cable, the status light (LD5) come on, indicating it has power. However, the standard USB driver does not appear as described in the nRF52 document (as picture No_01):
When try to connect with J-link commander, is said "out of sync" and stop wile resynchronizing...... (as picture No_02):
When use nRFgo Studio to connect nRF52 board, it is no response and nRFgo Studio is frozen. (as picture No_03)
Then, What's the problem?
