: Connectors, flexible printed circuit boards (FPCBs), and housing components.
The new board may require a firmware update to function correctly. e7a mb pcb v3 link
Why did the engineers move to V3? Here is a technical retrospective: : Connectors, flexible printed circuit boards (FPCBs), and
: The internal project or model code assigned by the manufacturer. MB : Mainboard / Motherboard. PCB : Printed Circuit Board. Here is a technical retrospective: : The internal
| Pin | Signal | Description | |------|--------|-------------| | 1 | VREF (3.3V) | Target voltage sense | | 2 | SWDIO / TMS | Data I/O | | 3 | GND | Ground | | 4 | SWCLK / TCK | Clock | | 5 | GND | Ground | | 6 | SWO / TDO | Trace output | | 7 | KEY / NC | No connect (keyed) | | 8 | nRESET | Reset line | | 9 | GND | Ground | | 10 | nTRST / NC | Optional reset |
Looking at the name, we can decode its likely meaning:
Locating specific capacitors or diodes that may have failed.