According to the supplier, there is no slot for a DigiCard. The connections also look rather poor. There are:
Optical digital output: Yes
HDMI interfaces: 4
HDMI 2.1 compatible: Yes
ALLM (Auto Low Latency Mode): Yes
eARC (enhanced Audio Return Channel): Yes
Network connection (Ethernet): Yes
USB connection: Yes
USB 2.0: 2 x

I would like to answer this question. Since 29 November, the supposedly 1st delivery, I have been waiting until today, 9 December, every day for an announced delivery and again and again an e-mail comes "exgüsi a delivery problem at Planzer.