further down in `--help` output it says:
```
  --pins-cs SET             bind the applet I/O lines 'cs' to pins SET (default: 5)
  --pins-io SET             bind the applet I/O lines 'io' to pins SET (default: 2, 4, 3, 0)
  --pin-sck NUM             bind the applet I/O line 'sck' to pin NUM (default: 1)
```