D-Link KX-TDA100 - Manual (Page 118)

2.5 Installation of the Extension Cards
118 Installation Manual
2.5.6 EXT-CID Card
Function
Sends Caller ID signals to extension ports. To be mounted on the SLC8 card.
Accessory and User-supplied Items
Accessory (included): Screws × 2
User-supplied (not included): none
EXT-CID Card
Screw
SLC8 Card inside