Not worth it
For SAMD21 trinket M0 MOD for switch dongle RCM-X86
Product itself is acceptable, but the terrible documentation doesn't help at all. Had to stick to another documentation, which is not even affiliated with the product, but does understand it more than the one, who made and documented this product.
Shipping was very slow, and I didn't receive an answer wether the item was shipped at all after asking.
You're better off buying Trinket m0.
