Rating: 
Summary: unreliable at best -- a product that needs help
Review: A short review, to be updated as the user experience continues:
I got this unit in place of a wireless ethernet because of the price and the size. It is powered by USB so it saves wire clutter. I am running out of PCI ports so that this was selected as an alternative. Here is a simple breakdown:Likes:
-Small size, portability, ease of connection Dislikes (minor annoyances omitted--only major flaws):
-Signal fluctuates quite a bit, from very good to very low, and at which point it drops connection. Other wifi devices in the same area suffers no such phenomenon, using the same WRT54G router.
-Not capable of being used in a windows network in XP (cannot select it as a network device) -- still investigating.
-Needs a driver to be connected, instead of the universality of a standard ethernet WIFI connection (WET54g, for example).
-The software stinks. It offers few additional features if at all. Might as well use windows network software instead.
-The connection would often drop after a while, without warning, and there is no way for me to reconnect to the available networks. At this point I have to unplug and reconnect to reset the unit. Doing this sometimes causes system to freeze in XP, and task manager shows that "system" process is using all the system resources. I will have to hard reboot, which of course comes with all the unplesantry of system crashes, which does not happen in xp that often otherwise. I am recommending against the product, becuase of the above reasons. It has wasted countless hours with reconfiguration woes, and sporatic disconnections due to the signal/reception fluctuation simply erode the user experience (net streaming media never comes in one piece). I picked Linksys systems over the cheaper Netgear just to change flavor, but this WUSB54G in particular seem to deserve much more attention before it should be considered by anybody. Caveat emptor.
Rating: 
Summary: Great Product
Review: At first, I was an angry customer too...just like many of you who wrote negative reviews. Then after I uninstalled the stupid LAN or WAN utility that was on the CD, it worked flawlessly! Just install the drivers! Forget about any other miscellaneous stuff.
Rating:
Summary: works
Review: does what it is supposed to do. i have no drops or lost connections. works fine. use the windows xp wireless interface instead OF LINKSYS. IT WORKS BETTER
Rating: 
Summary: Very disappointed
Review: Drops connection all the time. And this is a known bug .... sigh.
Rating:
Summary: good idea bad concept
Review: Have all linksys router works great laptop pcmcia card is flawless,but this thing a piece of junk.When it works is good for web surfing but cuts off too much.Tech support online was able to help me make it about 25% better by changing settings but still cuts off.Ended up just running cat5 to desktop.
Rating: 
Summary: This is the most confusing adapter
Review: Hi I just got my Linksys WUSB54G installed with the WRT54G wireless router. I've read that this adapter doesn't support WPA, is this true? Cause for some reason I got it to work with WPA-PSK on both the router and adapter on Windows XP. In order to have the WPA feature for the adapter, you must run windows update and have the WPA security installed. The adapter says it only supports Windows XP and 2000, yet when I tried installing it on 98SE, it worked perfectly fine except that there's no WPA feature nor is there a windows update to get the WPA security, so I'm using WEP instead. In order to get it to work, I had to use the software program that the adapter came with, where I configure the SSID, etc. Does anybody know if there is a way to get WPA on windows 98se, and is there a way to configure the wireless connection other than using the software it came with? If you go to wi-fi.org and check to see if the adapter is wi-fi protected access, the label has that feature checked, so does it mean it supports WPA or not?
Rating: 
Summary: Great little unit
Review: I always try to use LInksys products when I sell and set up networks for customers. They are priced right and in my experience perform excellently. I have purchased hundreds of Linksys units and I can not ever recall having a serious failure. I bought a boxfull of these little adapters for quick hookups for laptops not normally connected to the network. They are fast connect right away and just plain work. The only thing I have noticed about these are that they are more sensitive to cordless phones than the PC card adapters. I have no idea why, but they will drop off in the vicinity of Panasonic and Uniden phones. Sony and ATT phones don't bother it. Go figure.
Rating:
Summary: Too slow ! Go for PCI instead ..
Review: I am using this on a home network with a Netgear Wireless-G access point. On the same wireless network, I have a Netgear PC card (WG511) and a D-Link PCI Adapter (DWL-G520). Installation and set up couldn't be easier (I installed on Windows XP), but the speed is very disappointing. It shows the connection speed with the access point as 54Mbps, but when I do a speed test with my ISP, I get less than 300Kbps (downstream) whereas my other clients constantly give 1.2Mbps. I believe it is the limitation of USB. On normal browsing, I don't notice any difference, but big downloads are very time consuming. I had bought this to save PCI slots, but I think I made a wrong move. My piece of advice - buy this only if you don't have a vacant PCI slot and if you don't do any big downloads. If you have a vacant PCI slot, go for the PCI version because that is definitely more compact and efficient. If you don't have a PCI slot, I would recommend you make one by getting rid of adapters that you don't use (like a modem).
Rating:
Summary: Unlisted Limatations
Review: I bought the Linksys WRT54G router and it worked flawlessly. So I decided to stick with the company when I wanted to untether my desktop from the router. I purchased this item, only to find when it arrived that it does not support WPA encryption. So in order to use it I need to change my entire security configuration. There is no driver update, and their tech support told me 'they are working on a new driver' but provided no date. So if you don't mind leaving your network less secure, this is the adapter for you. Otherwise look somewhere else.
Rating:
Summary: NO NO NO NO
Review: I bought the Linksys WUSB54G Wireless-G USB Adapter for use with a Win XP laptop. The software installed but refused to run and just flashed a DLL error about every 10 seconds.
I downloaded new software from the LinkSys website that turned out to be two versions OLDER than what shipped with the product.
After finding several other people who had similar results and had posted about it on the internets, needless to say, I returned this product as defective.
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