IBM MT 2366 Hardware Maintenance Manual page 77

Some Mini PCI Cards do not have the modem function.
For those cards, skip step 7 because there is no modem
connector on it.
When installing: With the notched end of the card toward
6
the socket, insert the card into the
socket, and then press it firmly. Pivot the
card until it snaps into place. Make sure
that the card is firmly fixed in the slot
and does not move easily.
Removing and replacing a FRU
6
7
8
ThinkPad T30
73