3Com 3CCFEM556 User Manual page 17

Disconnecting and Removing the LAN+Modem Card 11
Figure 8 LAN and Modem Cable Clips
To release the cable from the card, squeeze the clips
located on the sides of the connector, as shown in Figure 9.
CAUTION: Do not pull the cable to disconnect the
connector from the card. This may damage the card and
make it inoperable.