I have three different cards which all work OK on all functions.
They are Panasonic, Sandisk and I-O Data.
The SD card has 8 Contacts one of which appears to be a double edge connector (Furthest from the bevelled end). The other type of card which looks like an SD card is a Multi-Media type and I believe the pin at the bevelled end is missing. These do not work with th KN7000.

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Willum
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Willum

After silence, that which comes nearest to expressing the inexpressible is Music.
Aldous Huxley
( especially when the music is played on a KN7000....)