MOD-RTL8188CU is SMD USB to WiFi module, the same used in MOD-WIFI-RTL8188

This item is OBSOLETE

MOD-RTL8188CU is supported in all official OLinuXino and SOM images. This module has no own antenna so you have to add an external one. The module works only with 3.3V.


  • BL-8188-8M WiFi wireless module with Realtek RTL8188CUS chip
  • Antenna: external; not included
  • Compliant with:  IEEE802.11n/g/b
  • FCC approved
  • Frequency: 2.4 GHz
  • Data rates: up to 150Mbps
  • Operation Mode: Ad hoc, Infrastructure 
  • Security: WEP, TKIP, AES, WPA, WPA2 
  • RF Output Power: < 13dBm @ 11n, < 18dBm @ 11b, < 14dBm@11g
  • Receiver sensitivity: 11Mbps -86dBm @ 8%, 54Mbps -73dBm @ 10%,130Mbps -66 dBm @ 10%
  • Wireless transmission distance: up to 100m indoors; up to 300m outdoors (depends on the environment)
  • Interface USB 2.0 
  • DC operating voltage:3.3V +/- 0.2V
  • Power Consumption: DC 3.3V module - Transmit: max. 160 mA; Receive: max 125 mA 
  • Operating Temperature: 0 – 50° C ambient temperature
  • Storage Temperature: -10 ~ 70°C ambient temperature
  • Humidity: 5% to 90 % maximum (non-condensing)
  • Dimension: 25 x 12 x 2 mm (LxWxH)


  • I see that the module has no antenna. How can I connect external antenna?
  • A standard connector for an external antenna is not provided by design. You would need to use one of the pin holes of the module.