WE866C3 Wi-Fi Network Interface Card (NIC) User Guide
1VV0301545 Rev 1.0
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15
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2018-07-09
Figure 3:- WE866C3 Board
The WE866C3 NIC card has an LED indicator and an antenna mount point to plug in the
connector cables from the external antennas. It also has a jumper to select between 1.8v
and 3.3v SDIO line signal operations, depending on the host platform with SDIO controller
capabilities.
If the host SDIO controller is based on SD 2.0 protocol, then it supports only 3.3v I/O
operation. So, the jumper should be put into 3.3v position.
If the host SDIO controller is based on SD 3.0 protocol, then it supports 1.8v I/O operation.
The jumper should be put in the 1.8v position.
1.8v and 3.3v jumper positions are given in the following figure:
Figure 4:- Jumper Position for 1.8v SDIO Signal
