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  • TRENDnet 54Mbps Wireless G PC Card TEW-421PC
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TRENDnet 54Mbps Wireless G PC Card TEW-421PC


List Price: $24.99
Price: $11.16 & FREE Shipping
You Save: $13.83 (55%)
In stock.
Usually ships within 4 to 5 days.
Ships from and sold by pcrush-outlet.
  • Wi-Fi Compliant with IEEE 802.11g and IEEE 802.11b Standards
  • Uses 2.4 GHz Frequency Band, which Complies with Worldwide Requirements
  • Supports Ad-Hoc (Peer-to-Peer) Mode or Infrastructure (AP-Client) Mode
  • Dynamic Data Rate Scaling at 54, 48, 36, 24, 18, 12, 9 and 6Mbps for 802.11g.
  • Compatible with Windows 98(SE)/ME/2000/XP
36 new 7 used from $0.02

There is a newer model of this item:


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  • Buy Used and Save: Buy a Used "TRENDnet 54Mbps Wireless G PC Card TEW-421PC" and save over 90% off the $24.99 list price. Buy with confidence as the condition of this item and its timely delivery are guaranteed under the "Amazon A-to-z Guarantee". See all Used offers.
  • Get a $150 Amazon.com Gift Card: Get the Citi ThankYou® Preferred Card and earn a $150.00 digital Amazon.com Gift Card* after $1,000 in card purchases within 3 months of account opening. Learn more.

Technical Details

  • Brand Name: TRENDnet
  • Model: TEW421PC
  • Hardware Platform: Pc
  • Connectivity Technology: Wired
  • Network Data Transfer Rate: 54 Megabits Per Second
See more technical details

Product Details

  • Product Dimensions: 2.1 x 4.7 x 0.1 inches ; 1.4 ounces
  • Shipping Weight: 5.6 ounces (View shipping rates and policies)
  • Shipping: Currently, item can be shipped only within the U.S.
  • ASIN: B0001DHHI4
  • Item model number: TEW421PC
  • Average Customer Review: 3.3 out of 5 stars  See all reviews (20 customer reviews)
  • Date first available at Amazon.com: January 22, 2004

Product Description

Product Description

TEW-421PC 54Mbps Wireless CardBus PC Card allows laptop users the mobile freedom to connect at home, in the office or to wireless hotspots on the road. It complies with the IEEE 802.11g standard, making it backward compatible with 802.11b networks for assured compatibility as you roam between networks. Advanced 128-bit WEP encryption is supported to provide secure access for your data. Cut the wires and move freely with TRENDnet s 802.11g wireless products.

From the Manufacturer

TRENDnet's TEW-421PC 54Mbps Wireless CardBus PC Card allows laptop users the mobile freedom to connect at home, in the office or to wireless hotspots on the road. It complies with the IEEE 802.11g standard, making it backward compatible with 802.11b networks for assured compatibility as you roam between networks. Advanced 256-bit WEP encryption is supported to provide secure access for your data. Cut the wires and move freely with TRENDnet’s 802.11g wireless products.

Features and Benefits

  • Uses 2.4 GHz frequency band (DSSS), which complies with worldwide requirements
  • Supports IEEE 802.11g or 802.11b (11Mbps) wireless devices
  • Supports Ad-Hoc (peer-to-peer) mode and Infrastructure mode (Access Point)
  • Supports 64/128/256-bit Wired Equivalent Privacy (WEP) and Passphrase
  • Three-Year Warranty

Customer Reviews

You really can't go wrong with this card.
Harold G. White
Based on my experience with them so far, I'm very happy that I did!
Mitch W.
I downloaded the latest drivers from their website (Win XP).
M. Koehler

Most Helpful Customer Reviews

10 of 12 people found the following review helpful By Ing. Antonio A. Gallardo R., MSc. on March 19, 2005
Verified Purchase
I buyed 3 of this cards. They works fine in winXP with and without Service Pack 2. This cards are very cheap and works good. I connect them to a Linksys WRT54g. [...]

The card uses Texas Instruments chips. Seems like the chipset company don't support Linux. Hence, the card is not easily to install in Linux OS. You can find some web pages describing the linux instalation, but I had no time to do a try.

The non-Linux support is the only reason to give them 3 star. I will like to have a plug&play linux support as is the case of a lot of other cards.
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5 of 6 people found the following review helpful By Gadget Girl on March 29, 2005
Received the card a few days after I ordered it from Amazon. After reading many reviews, I downloaded the driver from the Trendnet website instead of using the CD that came with the card. Unzipped and installed the files, re-started my laptop and inserted the card. Everything went smoothly and I was surfing the web in 5 mins. I read Gary's review about the card not working for his IBM Thinkpad and was skeptical at first since I am also using an IBM Thinkpad running Windows98 SE. But mine works perfectly and very good reception. Highly recommend it!
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3 of 3 people found the following review helpful By t on July 16, 2009
Just installed it in 5 minutes while reading the - get this - MANUAL! They actually send you one! It finished installing itself on my aging Satellite with XP before I even finished the instructions. What a far cry from Linksys. Way better and for less than half the price. HOORAY!
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2 of 2 people found the following review helpful By J. Smith on February 12, 2004
I was not able to get this card working with my Win2K laptop. I'm no novice, have configured the rest of my wireless network without any problem, and have had a friend's Netgear card working in the same system. I called tech support and after working with me they said the card was defective and to send it back, which I did. However, I had the same problem with the replacement card. So, I can't recommend this product.
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2 of 2 people found the following review helpful By Jose Zuniga on August 27, 2007
I use this pcmcia card on my HP laptop running windows 2000 Professional and so far it had worked perfectly.
It comes with a software that helps you to connect to the wifi network.
At home I have a Linksys router but I had used it in other networks too.
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Verified Purchase
I had this in my small Windows 98se machine and it always worked w/o problems. So when a friend needed a wireless card quickly for her XP machine I gave her mine and ordered a replacement for myself. When it came, I noticed the box was slightly different but the card itself looked the same. I installed it in my 98se machine and it wanted new drivers! After installing the new drivers, it still would not work! A call to Trendnet informed me that the card had been upgraded and now needed more memory to operate. Since my 98se machine was already maxed out, I switched the cards (new card to XP machine and old card to 98se machine). It would have been nice if Trendnet had indicated the version on the box but it is OK as both machines are working wirelessly great.
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I spent 3-4 hours trying to make this card work but it never went beyond 1 Mbps even when I was sitting 1 foot away from the wireless access point. Very disappointing.

I have a Thinkpad that runs Win XP Home. I plugged this card in and installed the driver utility from the CD. Everything looked fine and the card seemed to be connecting to the access point but my speed never went over 1 Mbps. I use WEP security in my home network.

After 3-4 frustrating hours I had to go back to my 5 year old Lucent Orinoco 802.11b card. With the Lucent card I was up and running in 10 seconds.

My advice, spend a few extra dollars and buy Netgear, Linksys or any of the other well-known brands.
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1 of 1 people found the following review helpful By Harold G. White on January 3, 2007
Verified Purchase
You really can't go wrong with this card. The reception is excellent the price is awesome.
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Most Recent Customer Reviews