WIFI-2 is an Ogemray GWF-3M08-33-B-7-2 OEM WiFi Module designed to use a USB2.0 port on a 3.3V system. It has a Ralink/MediaTek RT5370N WiFi module and an i-PEX MHF (U.FL) connector for attaching an external antenna. Its 7-pin interface at 2mm pitch allows it to be connected to an Arietta-128MB or Arietta-256MB embedded Linux module (a header socket is included that you can solder to your Arietta so you can plug in this WiFi module).

You could use a 2mm-pitch prototyping board to build this into your own design.

This is not an end-user USB WiFi module! It is designed to be embedded into a device that would provide the actual USB port.

Although this module has an antenna trace on its PCB, that trace is not connected. If you only need a short-range solution using an integrated PCB antenna, purchase the WIFI-2-IA which has its integrated PCB antenna connected (but does not have a U.FL connector).

Compatible Antenna

WiFi Module Features

• Standards: IEEE802.11b/g/n (1T1R mode)
• Operating Frequency: 2.412 to 2.4835 GHz
• Protocols: CCK, QPSK, BPSK (802.11b); OFDM (802.11g/n)
• Security: WPA/WP2/WPAI, 64/128/152-bit WEP, WPS
• Antenna: Requires external antenna to be attached to U.FL connector
• Operating Voltage: 3.3V DC
• Operating Current: Less than 250mA (OFDM, 54Mbps)
• Bus Interface: USB 2.0/1.1 via 7-pin 2.0mm-pitch header
• Can be configured for Access Point mode

Pinout

Using WiFi Module on Arietta G25

Note that the Activity LED on the WiFi module is not connected on Arietta boards. Also note that the module uses Arietta's USB port B signals on J4.16 (D+) and J4.18 (D-), so those pins can not be used for other purposes when this module is installed.

WiFi Module Resources

• Ogemray GWF-3M08 Datasheet (note that this module is the 3.3V version with i-PEX MHF receptacle and downward-facing pins)
• MediaTek Downloads Page has drivers for the RT5370N (Note: If connecting to an Arietta, you have drivers included already in the default microSD Linux build)
• Configuration of WiFi Module on Arietta Boards