Asus P8B-C/4L User Manual page 53

4. USB connectors (10-1 pin USB34, USB56; A-Type USB7)
These connectors are for USB 2.0 ports. Connect the USB module cables to
connectors USB34 and USB56, then install the modules to a slot opening at
the back of the system chassis. These USB connectors comply with USB 2.0
specification that supports up to 480 Mbps connection speed.
5. Parallel port connector (26-1 pin LPT1)
This connector is for a parallel port. Connect the parallel port module cable
to this connector, then install the module to a slot opening at the back of the
system chassis.
ASUS P8B-C series 2-35