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Realtek RTL8191SU Wireless LAN 802.11n USB 2.0 Network Adapter
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Applies to:

WiFi Wireless-N USB Adapter RTL8191SU






Windows 7

File Size:

28.3 MB

File Name:

Release Date:




Last Updated:



/5 from 20 reviews.


  • Type: Network Adapter
  • Interface: USB
  • Network Standard: IEEE 802.11b/g/n compatible WLAN IEEE 802.11e QoS Enhancement (WMM) IEEE 802.11h TPC, Spectrum Measurement IEEE 802.11i (WPA, WPA2). Open, shared key, and pair-wise key
  • Features: Configurable Bluetooth Coexistence Interface
  • Bandwidth: 40MHz


The Wi-Fi Wireless-N USB Adapter RTL8191SU 150M + antenna is a wireless USB interface type featuring 150 Mbps transmission rate, 300 / 150Mbps receive and transmit PHY rate, using the 40 MHz channel. This highly integrated single-chip MIMO (Multiple Input – Multiple Output) WLAN controller is compatible with the 802.11n specification and backward compatible with 802.11b/g devices. This Realtek Adapter includes 1x2 MIMO technology for extended reception robustness and exceptional throughput and supports Cisco compatible extensions.

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There are different categories of wireless implementations, standards, and devices. These categories involve radio communication systems, amateur radios, wireless networks and wireless sensor networks, cellular networks, land mobile radios, cordless telephony, and more. With so much cord clutter, especially in office environments, many manufacturers have seen the need for wireless technology to improve workplace settings' efficiency and comfort. Wireless devices tend to have slower response times but this issue is currently being addressed by their manufacturers.