CNC Tech’s 1002-021-01000 is a USB 2.0 Type-A vertical receptacle. Some older examples of the device have a black insulator, while newly ordered ones ship with a white insulator. is this a quality control issue?
No. Confirmed by CNC Tech, the color of the connector’s insulator was changed from Black to White since Feb.20.
From the datasheet, prior to 20/02 Here
The latest datasheet is Here