TDT System 3 Installation Manual page 22

22
The PO5e Optibit PCI express interface card must be
installed in a PCI Express slot. The PO5e card uses a single
lane (x1) but may be used in any PCIe slot size (x1, x2, x4, x8
or x16).
(Back of Computer)
The LO5 ExpressCard interface requires a 34mm (26-pin)
ExpressCard slot in your laptop or computer.
Note: The interface type must be selected during driver installation and TDT
Drivers must be installed before connecting any TDT hardware to your PC.
System 3 Installation Guide
PCI express
ExpressCard