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Mini PCI Express connector
It is used to connect the EM660 to the WWAN Mini PCI Express interface of the PC.
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Screw holes
They are used to fix the EM660 on the main board of the PC with screws.
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Antenna interfaces
They are used to connect antennas.
EM660 has an external antenna which connect with laptop.
The max gain which is allowed of external antenna is
：
850M:<4.28dBi
1900M:<3.6dBi
Requirements for the PC
To use the EM660, the PC must meet the following requirements:
WWAN Mini PCI Express interface.
Windows 2000 SP4, Windows XP SP2, and Windows Vista
Mac OS X 10.4 and 10.5 with latest upgrades
The hardware of your PC must meet or exceed the recommended system
requirements for the installed version of OS.
Display resolution: 800 × 600 or above.
