EVDO PC Embedded Datasheet

Product Datasheet
V001R006
Issue 2 (2009-01-20)
Confidencein Commercial
Page 16 of 60
Figure 2-2 Appearance of the interfaces on the EM660
1
3
2
2
Mini PCI Express connector
It is used to connect the EM660 to the WWAN Mini PCI Express interface of the PC.
Screw holes
They are used to fix the EM660 on the main board of the PC with screws.
Antenna interfaces
They are used to connect to antennas. Auxiliary antenna and main antenna are
combined to support receive diversity. The receive diversity can strengthen the
received RF signal quality and improve RF performance, and whether to open or
close the receive diversity function can be controlled by software.
Notes:
We strongly recommend adding auxiliary antenna when you design PC with the EM660.
2.1.2 Dimensions of the Mini PCI Express Connector
The EM660 adopts a standard Mini PCI Express connector that has 52 pins and
complies with the PCI Express Mini Card Electromechanical Specification Revision
1.2.
Figure 2-3 shows a 52-pin Mini PCI Express connector (take the Molex 67910002 as
an example).