Samsung TU85CU8005KXXC E-Manual page 172

Connecting the "CI or CI+ Card"
Connect the "CI or CI+ Card" to the COMMON INTERFACE slot as shown in the image below.
Connecting the "CI or CI+ Card" via COMMON INTERFACE slot
Only for models with Common interface slot.
Connect the "CI or CI+ Card" to the COMMON INTERFACE slot as shown in the image below.
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