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Realtke RtlProt WLAN Utility Protocol Driver
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Applies to:

Realtek RTL8191SE-VA2






Windows XP

File Size:

48.6 MB

File Name:

Release Date:




Last Updated:



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  • General: 64-pin QFN
  • Host Interface: Complies with PCI Express Base Specification Revision 1.1
  • Standards Supported: 802.11e QoS Enhancement (WMM, WMM-SA Client mode) 802.11h TPC, Spectrum Measurement 802.11k Radio Resource Measurement
  • Security Features: 802.11i (WPA, WPA2). Open, shared key, and pair-wise key authentication services
  • Bandwidth Transmission: 20MHz and 40MHz


The Realtek RTL8191SE-VA2 is a Single-Chip IEEE 802.11 b/g/n 1T2R WLAN Controller with PCI Express Interface. This unit features support for 802.11e for applications that do not take well to delays, such as audio and video streaming over the Web, 802.11i for security applications, and 802.11n for improved MAC communication efficiency. It can achieve significantly enhanced protocol efficiency by using methods such as A-MPDU with BA and A-MSDU. To reduce power wastage during idle time, and to make up for higher power requirements during MIMO OFDM transmission, it has Power efficiency mechanisms including Legacy Power Save, U-APSD, and MIMO power saving.

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As seen and experienced in some malls, cafes, and restaurants, WIFI, is a way for connecting different devices such as computers, mobile phones, tablet, and personal digital assistants to the Internet through an access point for the wireless network. Also popularly called a hotspot, the range of an access point is approximately 20 meters indoors and greater outdoors. It is widely practiced to overlap access points to extend the coverage to include wider geographical areas with the intention of servicing more stations or stations that are situated over longer distances.