User can change hardware MAC address only once

Complies with IEEE 802.11n, 802.11g and 802.11b standards

Supports auto fallback with speeds up to 300 Mbps

Supports ExpressCard/34 bus


The SD451 is a 802.11n Mbps wireless plug-and-play ExpressCard adapter. Firmware allows the user to program the physical MAC address only one time. Utilizes the top-notch chipset technology and provides easy installation. Automatic sensing connects to the wireless network at the highest negotiable speed. With SD networking, your computer will turn into a highly-configurable workstation or server.


  • Compatible with IEEE 802.11n Draft 2.0 Specifications provides wireless speed up to 300Mbps data rate

  • ƒCompatible with IEEE 802.11g high rate standard to provide wireless Ethernet speeds of 54Mbps data rate

  • ƒSupports Multiple Input Multiple Output (MIMO) technology

  • ƒSupports wireless data encryption with 64/128-bit WEP standard for security

  • ƒSupports WPA-PSK, WPA2-PSK, WPA, WPA2 Securities

  • Internal integrated antennas

  • Drivers support major Windows® operating systems and Linux

  • ƒSimple user setup

  • Regulatory Approvals: FCC, WEE, RoHS

  • Plug & play
  • Specifications

    Interface ExpressCard bus
    Standards IEEE 802.11b and IEEE 802.11g and IEEE 802.11n
    Antenna Internal integrated
    LED Indicator Link
    Supported OS Windows 98, ME, Windows 2000, Windows XP, Windows Vista, Windows 7, Windows 8, Linux, MacOS
    Temperature Operating: 0° ~ 55° C
    Storage: -20° ~ 80° C
    Humidity 10% ~ 90% max. (non-condensing)
    Certification FCC Part 15.247 for US
    EU Directive 1999/5/EC for Europe
    Modulations DBPSK/DQPSK/CCK/OFDM
    Frequency 2412 ~ 2484 MHz ISM band (channels 1 ~ 14)
    2400~2483.5MHz ISM band (channels 1 ~ 11)
    Media Access Protocol CSMA/CA with ACK
    Data Rate (auto fallback) 802.11b: up to 11Mbps
    802.11g: up to 54Mbps
    802.11n: up to 300Mbps
    Output Power 17dBm typically @ 802.11b
    13dBm typically @ 802.11g
    13dBm typically @ 802.11n
    Receiving Sensitivity 300Mbps: Typical -65dBm @ 10% PER (Packet Error Rate)
    54Mbps: Typical -72dBm @ 10% PER (Packet Error Rate)
    11Mbps: Typical -86dBm @ 8% PER (Packet Error Rate)
    Security 64/128-bits WEP Encryption
    Channels 1~11 channels (FCC)
    1~13 channels (ETSI)