how to connect my Atmel ICE debugger to the MKRZero ?

Hello,
how can I connect my Atmel ICE debugger [via SWD] to the MKRZero ?

I know that I have to solder the missing "J8" connector to the backside of the MKRZero...
(btw. is it 50mil or 100mil connector ?)

but the "J8" is only 6-pin and the Atmel ICE has 10-pin SWD connector,
so what adapter is the right one ?

I think, the Adapter I got with the Atmel ICE is for AVR ISP only (?)

Hi,

in the attachment you can find an illustration of the pinout of the J8 header with the SWD signals you need to connect to the ATMEL ICE.

MKRZero_SWD.png

At this link there is described how to connect a SWD target to the ATMEL ICE.
Refer to the connection to the SAM port and pin numbering.

You can use the "50-mil 10-pin mini-squid cable with 10 x 100-mil sockets" if it's included in the ATMEL-ICE kit you have purchased.
It's the one in the top of this image:

(Empowering Innovation | Microchip Technology)

You can solder wires directly on the pads, mount a 2x3 100-mils pitch header or use pogopins on a perfboard.
In case you want to build an adaprer I'd like to note you that the pads of the J8 connector are aligned with the GPIOs headers so you can use them for centering the MKRZero SWD connector with the adapter.