Ok for home network, lousy support, PPTP VPN won't work
594585
I've been running the D-Link AirPlus DI-614+ with a D-Link DWL-650+ wirless card for about 6 months.
The good:
Easy install (READ the instructions FIRST!)
Good connection quality and decent speed.
Worked great for sharing my cable modem for Internet access, file sharing across computers, printer sharing.
The utility that comes with the DWL-650+ card allows you to setup separate profiles for different wireless networks, a great convenience if you want to switch easily between home, work and Starbucks!
The bad:
The DWL 650+ PCMCIA failed after a few weeks.
Tech support was really bad, blamed everything but the card. After about a dozen e-mails & phone calls I finally got a tech to admit the card wasn't working since the indicator wouldn't even light up.
Replacement card required securing with my credit card and signing / faxing a 'cross shipment agreement' so they could ship immediately while my old card was being returned. Well they got my old card in a couple days but didn't ship the replacement for several weeks!
After finally getting the defective card resolved (2 months!!) everything worked again fun until ..
It wouldn't support my company's VPN connection through the wireless. (Wired connection does work though!) They're documentation says it supports PPTP VPN Pass through but after several more calls to their tech support, a bunch of configuration changes, the last tech finally said I 'had to understand that VPN requires too many packets for a wireless connection'. So why do my coworker's Linksys systems work fine then?!
Bottom Line:
It's fine for setting up a home network and sharing a broadband internet connection. But be wary if you need to do anything more sophisticated, especially if you ususally need support. Me? I'm buying a Linksys and selling the DLink stuff!
2176460
Lot of issues in connecting wirelessly. I had dropped connection several times a day. The errors varied, timed out, no dns, protocols missing. Two dell inspirons exhibited same issue. I suggest to look for alternative product. Tried all that the arris support suggested; works for a while and same issue.

I replaced the unit with
TP-LINK DOCSIS 3.0 Cable Modem
using  my old router - works like a charm!
390832
I bought this unit specifically for the role of an Access Point (AP) client--essentially, an 802.11g adapter that connects to my computer via wired Ethernet instead of USB or PCI.  This unit fulfills that role pretty well, once I figured out the right procedure.  It handles WPA-PSK (TKIP) as well as no-encryption, but I could not get it to handle WEP encryption.  WEP is crackable anyway.

Many reviewers attack this unit for its repeater and bridge capabilities, or lack thereof.  But any good Internet reference will tell you that repeater and bridge capability is not fully standardized, and cannot be expected to work properly except between units of the same make and model.  Most reviewers, I think, erroneously expected this unit to work as a bridge or repeater with a router or AP of some other make or model.

I did not try to use this unit as an AP (host).

This was my procedure to set up the unit as an AP client:

1) Set up the wireless router for either WPA-PSK encryption or no encryption at all.

2) Connect the ViewSonic AP client to the desired computer, via wired Ethernet.

3) Set the desired computer's IP address statically, to 192.168.1.150.  Set the gateway and DNS addresses to that of the wireless router.

4) Bring up a Web browser on the desired computer, and go to 192.168.1.2 (the IP address of the ViewSonic).

5) Set the ViewSonic's operating mode to AP client.  It will need the MAC address of the wireless router.  You might be able to browse for it using a Scan button, but otherwise just get it from your router and type it in here.  Apply settings.

6) Set the 802.11g parameters to the same as on the router--e.g., mixed b and g speeds, security/encryption of WPA-PSK.  Apply settings.

7) Try to go to a Web site.  If connection fails initially, reboot the computer.

After everything is working, one could probably switch the computer to use DHCP instead of the static 192.168.1.150; but I just left it that way.
1552643
Where to begin... I bought 3 of these for home security.  I bought these planning on setting up ZoneMinder on my home server.

I found that the Wizard you use to set them up is bugged and won't let you enter your wireless paraphrase so I skipped it and kept it on Ethernet to complete the wizard.  Once I hit the webpage I again attempted to configure wireless but again the device is flawed and wouldn't connect to my wireless using manual configuration (I'm an IT person btw).

I FINALLY got it to connect by pushing the WPS buttom for 5 sec (I NEVER use WPS) and than on my Mikrotik router sending a :WPS accept" command.  That is the ONLY way I could get these on my Wifi.  How is this possible from a networking company like D-Link?  Embarrassing!

Also, all 3 of the cameras came with the original ship firmware so I had to hit the D-Link support website and get the latest firmware and update through the camera web GUI.  No problems there besides the hassle.

Next I set the camera names, setup some static DHCP's in my router, and I set the cameras resolution to 640x480 @ 15 fps with high quality JPEG and disabled audio.  Finally I added the cameras to ZoneMinder and so far all is well.

I gave them 3 stars because configuring the Wifi was way more a pain than it should be.  Then again I don't like WPS and I like to manual configure my stuff.

It's too early to say for sure so the verdict is still out.  I like them but I still have to permanently mount them.
1331252
I purchased 2 of these adapters and they consistently do not sustain a connection.  They will work as long as you don't require consistent access. I tried to use them for streaming and VPN on ubuntu and Windows 10 without any luck.
3884115
Have played with this for months, always fails to connect with my network
977598
Their installation software never worked from the beginning.  You insert US Robotics Installation CD and the "Launching 3COM Modem Install Assistant" message but nothing.  Tried 3 times and the same result.  So I configured it myself by having the windows to detect PnP but I am not sure if I am using the optimal driver.  I never had any problems with any other modem such as Zoom or even cheap Taiwan made modems.  Stay away with this one.
1073732
I am using this product to extend my wireless network and deliver internet connectivity to my DirecTV receiver and my X-Box 360 down in the living room. Note that currently I can only provide internet to one or the other at a time with this device. It only has one ethernet port on the back. I would need a switch/hub to split the signal to both devices. My DSL modem and router is upstairs in the office, and since I am renting I don't want to go to the trouble of running ethernet to the living room. Now that the device is up and running, it works as expected. Getting it set up was a bear though. The instructions you might as well set on fire as soon as you have them in your hands. They were outright wrong.

You have to set your computer up with a static IP in order to access the management software on the device. The manual says to give your computer a static IP of 192.168.1.x, with x being a number between 2 and 254. It doesn't mention using a default gateway, but typically you would fill this out. I entered 192.168.1.100, which is the default IP of the access point. None of this worked. I ended up calling TrentNet technical support. I was on hold for all of 5 seconds, when a nice man from India picked up and got my problem solved in maybe 10 minutes. He was extremely helpful. Turns out, the documentation is wrong and I needed to set my static IP to 192.168.1.15, and leave default gateway blank. After doing this, and doing a hard reset of the access point (via the reset button on the back), I was finally able to log into the access point. That was all I was calling about, because I was fairly sure I could set up the rest on my own. But he asked me what I wanted to use the device for, and he went ahead and walked me through the rest of the settings. As I said, he was very helpful.

So bottom line, the product works as intended. The documentation is absolutely worthless, and the tech support at TrentNet is top notch (in my experience).
3226912
I got this mainly for my Verizon PN820 running WM5.  Installed the latest driver off of the website (didn't bother trying the old one that shipped with it on the mini-CD), plugged in the card, entered my key, and it worked fine.  Found my work and home networks, but range seems more limited at home (which might be the fault of my dirt-cheap Buffalo router/AP).  The phone occasionally gets confused when I take the card out or put it in and requires a reset--I doubt it is the card's problem though, this is WM5 after all.

Just for kicks, also tried this in my Viewsonic V37 PocketPC running PPC2007 using an adapter to get it into the full-sized SDIO slot.  Driver installed and card seems to be detected, but the OS itself is pathetic and impossible to properly configure.  I think I'd need PPC2007SE to get it working, and Viewsonic discontinued their PPC line and never released an update (I was lucky to find the PPC2007 update as it is).
4441421
When I decided to move from ADSL to cable Internet service, the SBG 6580 appeared to be the simplest solution.  A cable modem, 802.11n access point and router all rolled into one for a reasonable price.  It seemed like a logical decision at the time - but one I have come to deeply regret.

The first sign that this was a poor decision came when I tried to get the modem up and running on Charter.  After several hours on the line with Charter tech support we still could not get it working; a house call was required to get it to successfully sync.

Once we had the modem/gateway up and running the next layer of problems appeared - SIP would not work.  The SBG 6580 comes with various "ALGs" turned on by default, including a SIP ALG.  While ALGs are supposed to "help" enable services to work with NAT, in reality, they just create more problems.  So I turned off the SIP ALG, but still I could not get signaling or media to function.

After reading other reviews involving issues with the routing functionality of this modem, I resolved to use it entirely as a cable modem, turning off all router functionality, and using an Apple Airport Extreme as my router, which I have some experience in configuring for use with SIP/RTP.  Finally, after a few more hours of fiddling, I got SIP working.

However, some other issues are still there.  For one thing, I have noticed that when the router is cable modem is turned on for long periods, there is a noticeable performance decline that appears to resolve itself after the modem is rebooted.

Altogether I have "invested" 10+ hours debugging various aspects of this modem, with no end in sight.  The in-box and online documentation is minimal at best, and the web-based administration tool provides little in the way of guidance as to what the various settings mean.

The one good thing that has come of this experience is that I have been taught a valuable lesson -- check the reviews *before* purchasing.
4360220
Initial setup was nice, particularly compared to D-Link, (the tech decided the D-Link was broken).  But I came home from vacation and its not sending out a signal anymore.  The WAP11 connects to the LAN fine, but none of the laptops are getting any signalfrom it.  Tech support was laughably inept.  Now I've figured out the reset button doesn't actually do anything.  They want me to upgrade firmware a third time.  DSL Reports.com says there's a problem with the latest firmware.  I wish I could buy one of these things and it would just work.
2113102
A potentially very good home wi-fi router for the home and home office.  DHCP and IP address mapping, MAC filtering, etc.  Also allows for secure local administration through SSL.

Now I get to the what is wrong - the latest ASUS firmware update rendered the device unmanageable. Router is running that is good. However post update I received a message the screen would refresh and reconnect me and that the IP address and port had changed. Sure enough a known problem.  So I performed a trace route from a local machine and address has not changed.

And tech support has been weak thus far, I explained the issue and the email that came back looked like that ASUS did not read me email.  Loosing stars for the firmware update and support.
2516726
I've been using Zyxel firewalls predominately for about ten years, using enough other equipment for me to prefer Zyxel whenever I can get it.

I'm an IT consultant for small companies, and most of them run Exchange servers and remote access servers and so on. With the exception of the "small business" Cisco/Linksys stuff like the RV042, it's very hard to find anything that allows multiple external IP addresses mapped to multiple internal addresses. There's nothing you can use at Staples, OfficeMax, Office Depot, Costco, etc. I live near two of the CompUSA/TigerDirect stores and they usually have nothing that will do 1-to-1 NAT (network address translation) either. So I have to order more complicated units from Internet or mail-order vendors.

Once you're in this product category, the cost explodes and there's usually annual "support" costs higher than any of the consumer products. SonicWall is a good example of this. I find the Zyxel products out-perform just about everything out there, have zero ongoing costs during the supported life of the units and this includes setup, support and updates and patches. If there's anything else out there that does this, I've never heard of it.

And it just works at a level far beyond the consumer gear. I have one client with four offices all connected together by IPsec VPN tunnels and they stay up "nailed up" for several months at a time with no work.

I have two clients with cable 35x5 Internet connections that are fast but not very reliable, and secondary connections to flex T1 phone lines. The USGs automatically fail over to the T1s while the cable connections are down and automatically shift back once the cable lines are back. With DynDNS mail bagging services, email continues uninterrupted even as the WAN connections shift back and forth. For $200, that's flat-out amazing. And it works.

These are not for beginners. The firewall rules and the routing/port/address forwarding are not related. On consumer gear, port forwarding by itself opens the firewall: not so here. If you don't understand how to do what you need, you'll have to enable remote management and call Zyxel at 800-255-4101 and ask them to either help you or even do it for you. After a while you'll get the hang of it. It's worth the effort. They are that much better.

There is one substantial change for the worse in the current generation compared to the past product line. The current products do not have a VPN co-processor unlike the past line which did. I found the low end units like USG20 were not able to pass VPN traffic at even half the speed of Microsoft PPTP connections on 5mbps symmetrical connections, although the 50, 100 and 300 models can. I also found, with 2011 firmware at least, that the wireless USG20 model put the wifi on a different subnet making SMB network browsing almost impossible. It took a few hours for Zyxel's support to both figure this out and create routing between the wired and wireless side of the same unit to make it work.

True Enterprise customers don't take Zyxel seriously because they don't offer 24x7 support at any price. They will probably continue to spend hundreds if not thousands a year for Cisco maintenance and support. I'll keep with Zyxel as the amazing deal for the money.
2063707
I bought this router for its vpn capabilities (or should I say lack thereof). After a week and trying multiple firmware revisions, configurations (including alternative vpn client software), and tens of hours troubleshooting I'm giving up. I wasn't ever able to connect via vpn. This router is a waste of money. I used to swear by Linksys products. The last two have been Cisco branded, expensive and nothing but trouble.
607494
The Linksys WAP11 appears to be built on solid technology, however the software it comes with leaves much to be desired. The configurations don't make sense, and the documentation doesn't make sense, even to a seasoned computer and network engineer such as myself.
The security settings are done half-hazardly, and it is very hard to get this WAP to work using its maximum security settings, even with Linksys' own pc cards!
Linksys tech support seems to be vaguely aware of the fact that the configuration software comes broken, and they have very few answers.
Bottom line, I'd say this would be ok for a home, barely workable in a small office (be prepared to tinker with the broken configuration software for hours), DEFINATELY not ready for enterprise usage.
1518942
Total P.OS looses connectivity. Don't buy one of these
4691567
In its defense, version 2.0 of the firmware will make it a real bridge and pass thru the DHCP requests to the DHCP server, and it will assign itself an address from the DHCP server.  But this is not the DEFAULT configuration, so you have to install their configuration (PC-only) utility to force that mode (BTW the password is "password").
After upgrading the firmware and seeing 12 hours of fine performance, I started getting HUGE packet losses.  I'm running 3 PCs and 2 Mac OS X boxes thru it. Rebooting cleaned up the problem for about 5 minutes.  It is UNUSABLE in this state.
I called their customer service -- which they've outsourced to India -- a corporate trend I cannot support.
It's going back to the store >:-p