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Silver rectangular PCMCIA card with integrated antenna, Type II thickness

TRENDnet

TRENDnet TEW-421PC 802.11g PCMCIA Wireless Adapter laptop networking

SKU CH-58NA-4JX97 MPN TEW-421PC

An 802.11g PCMCIA wireless adapter adding 54 Mbps Wi-Fi to laptops via a 32-bit CardBus slot

  • Type802.11g PCMCIA Wireless Adapter
  • StandardsIEEE802.11b/g
  • Max Data Rates54Mbps
  • Interface32bit CardBus Type II
  • Security64/128-bit WEP, WPA
  • Frequency Band2.4 to 2.497 GHz (Industrial Scientific Medical Band)
  • 54Mbps wireless G speed for faster notebook networking
  • 32-bit CardBus Type II interface fits standard laptop slots
  • 64/128-bit WEP and WPA encryption protects data
  • 4 GHz band with dual diversity antenna for reliable signal
  • Ad-Hoc and Infrastructure modes for flexible network setup

PCMCIA Wireless G adapter

The TRENDnet TEW-421PC is a 32-bit CardBus Type II card that adds 802.11g wireless networking to a laptop. It operates on the 2.4 GHz band and delivers data rates up to 54 Mbps with automatic fallback to lower speeds. The card includes an integrated 2 dBi dual diversity antenna and supports WEP plus WPA security. It fits any notebook with a standard Type II PCMCIA slot.

For legacy notebook upgrades

This adapter suits owners of older laptops that lack built-in Wi-Fi or need a replacement for a failed internal card. It works in both ad-hoc peer-to-peer and infrastructure access-point modes. Buyers whose machines only have ExpressCard or M.2 slots cannot use this card. It also does not meet the needs of users who require 5 GHz operation or modern WPA2-AES encryption.

CardBus Type II interface

The single specification that determines compatibility is the 32-bit CardBus Type II interface. The laptop must provide a matching PCMCIA slot; newer ExpressCard, USB or internal M.2 connections are not compatible. Without this exact slot the adapter cannot be installed or used.

Highlights

  • 54Mbps wireless G speed for faster notebook networking
  • 32-bit CardBus Type II interface fits standard laptop slots
  • 64/128-bit WEP and WPA encryption protects data
  • 4 GHz band with dual diversity antenna for reliable signal
  • Ad-Hoc and Infrastructure modes for flexible network setup

Specifications

BrandTRENDnet
ModelTEW-421PC
Type802.11g PCMCIA Wireless Adapter
StandardsIEEE802.11b/g
Max Data Rates54Mbps
Interface32bit CardBus Type II
Security64/128-bit WEP, WPA
Frequency Band2.4 to 2.497 GHz (Industrial Scientific Medical Band)
Channels1~11 channels (FCC),
1~13 channels (ETSI),
1~14 channels (MKK-Japan),
10~13 channels (France), 3~9 channels (Israel)
ModulationCCK, DQPSK, DBPSK, OFDM
Transmitted Power15dBm
Antenna2dBi Integrated Microstrip Dual Diversity Antenna
Temperature0ºC to 40ºC
Humidity10-95%, Non-Condensing
FeaturesUses 2.4 GHz frequency band (DSSS), which complies with worldwide requirements
Supports IEEE 802.11g or 802.11b (11Mbps) wireless devices
Dynamic data rate shift at 54, 48, 36, 24, 18, 12, 9 and 6Mbps for 802.11g
Dynamic data rate shift at 11, 5.5, 2 and 1Mbps for 802.11b
Supports Ad-Hoc (peer-to-peer) mode and Infrastructure mode (Access Point)
Compatible with Windows 98(SE)/ME/2000/XP SP1 or SP2 (with latest utility/driver)
Supports 64/128/256-bit Wired Equivalent Privacy (WEP) and Passphrase (with latest utility/driver)
Supports Wi-Fi Protected Access Feature (WPA-PSK) (with lates
Dimensions4.65" x 2.1" x 0.2"
Weight1.27 oz
Package ContentsTEW-421PC
Quick Installation Guide
Resource Disk
Shipping weight0.91 kg
Package size193 × 137 × 33 mm

Questions about this item

Does the TEW-421PC CardBus adapter run hot when used continuously?

The adapter is rated for 0°C to 40°C operating temperature and draws power from the PCMCIA slot without a separate fan or heatsink.

My laptop only has a 32-bit CardBus Type II slot — is that enough for this card?

Yes, the TEW-421PC plugs directly into any 32-bit CardBus Type II slot and needs no external power or driver CD beyond the included resource disk.

Will this 802.11g card connect to my older 802.11b router at 11 Mbps?

It supports both IEEE 802.11g and 802.11b standards and automatically shifts down to 11, 5.5, 2 or 1 Mbps when linked to an 802.11b access point.

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