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ADSL2/2 USB Ethernet Modem | 
 enlarge | Brand: D-Link
Category: CE
List Price: $64.99
Buy New: $39.98
You Save: $25.01 (38%)
New (31) Used (2) from $35.49
Rating:  9 reviews
Sales Rank: 9649
Media: Electronics
Autographed: No
Memorabilia: No
Modem: DSL modem
Shipping Weight (lbs): 4
Dimensions (in): 4.3 x 5.7 x 1.3
Warranty: 1 year warranty
MPN: DSL-2320B
Model: DSL-2320B
UPC: 790069298257
EAN: 0790069298257
ASIN: B000N4WRGI
Availability: Usually ships in 1-2 business days
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Product Description
The D-Link ADSL2/2+ Ethernet/USB Modem (DSL-2320B) enables you to access a high-speed DSL Internet connection. Homes with a single computer can connect directly to the DSL-2320B and access the Internet. To share your high-speed Internet connection with multiple computers, simply add a multi-port router. In addition, the DSL-2320B automatically scans and detects your DSL settings, helping minimize set up time and hassle.
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| Customer Reviews: Read 4 more reviews...
 Lots of nice features but seriously flawed handling of large packets December 21, 2008
Daniel J. Gilley (San Jose, CA USA)
1 out of 1 found this review helpful
I spent about 4 hours trying to install and debug this DSL modem. The initial install went beautifully, more easily than any other DSL modem or cable modem I've used. It was great. The auto-detect process seemed to work perfectly and quickly found exactly the right settings for my ISP (AT&T) without having to make obscure config changes to get it to connect.
So I was up on the internet in just a minute. But I started noticing weird problems with some sites and it was slow in general. Some sites were totally impossible to access, timing out eventually. Other sites had some images or other parts inconsistently corrupted. Some sites seemed to work perfectly. This inconsistent behavior was mysterious to me.
By searching online and reading reviews by other users I eventually discovered the source of the problem. PPPoE, the protocol used for DSL, has a maximum packet size of around 1492 bytes. But most network equipment and PCs default to a 1500 max packet size. A packet that is too large for the connection will be either dropped or fragmented.
In the case of the this dlink DSL modem, it either botches the fragmentation causing packet corruption or simply drops them. So websites that use packets bigger than 1492 bytes fail to function. An example is www.microsoft.com.
Note that some people have partially resolved this problem but the solution is NOT acceptable. It is possible to install software on your PC or modify your windows registry to force smaller packet sizes than the 1500 default. This avoids the bug in this dlink modem. But EVERY computer or device attached to your network will need to be individually modified to function correctly! That isn't the way it is supposed to work.
I tried putting a router in front of the dlink modem and setting its maximum packet size to various sizes below 1492 hoping that it would fragment the packets so the dlink modem wouldn't barf. But that didn't work for some unknown reason.
Anyway, since that time, I've bought and used two other brands of DSL modem (an integrated DSL modem/802.11n router from Netgear and an Actiontec GT701D). Both of these other DSL modems work perfectly with zero problems with large packets. So don't but this dlink until they fix this widely reported bug. Its too bad because otherwise it seemed like a cool modem.
I recommend the Actiontec GT701D. So far it has performed really well. The auto-detect didn't work right (typical) but after manually entering the right settings it worked and is fast. And it also has a lot of status to track its functioning. It even has pretty advanced monitoring and logging to track network use by port, IP address, etc. Cool stuff, especially considering it was the cheapest DSL modem I could find.
 Zero issues! November 16, 2008
Mom of 2 (IL)
Plugged it in - that was it! Worked immediately. We have AT&T DSL service. Zero issues.
Works Great for AT&T DSL on West Coast November 5, 2008
Avante_Guarde
Bought this to replace a Speedstream 5100 on AT&T DSL. Below are the steps I took to get this to work. Please note that this method causes the DLink modem to enter "bridged" mode and all firewall protection and DHCP becomes the responsibility of the Router.
Here is my setup:
PCs --> WiFi Router --> DLink DSL Modem --> Phone Line
- Router has dd-wrt firmware installed
My Installation order:
1) plug power and phone line into DSL modem, but don't turn it on yet
2) plug router into power, turn it on
3) configure router for PPPoE, with correct username and password
4) connect DSL Modem to router that is already on
5) finally, turn on the DSL Modem
at this point, any PC connected to the router will now have DSL Internet
From my experience, this transfers at the same top speed as the old modem, but the response time and burst speed is much faster. It also seems to be more tolerant of line noise.
 Does not work with AT&T August 26, 2008
Brutus (Cleveland, OH)
4 out of 6 found this review helpful
Spent a full day trying to make this modem work with AT&T service. After many phone calls to AT&T and D-Link as well as on-line chats, I could not get a connection to the AT&T network. AT&T blamed D-Link. D-Link blamed AT&T. Stalemate. Had to return product.
 dsl/usb modem May 5, 2008
organian
the equipment worked great. installed and set up easily. very satisfied with the product. difficult to find because we needed a modem, not a router, with usb capability. worked very well with our server and intranet. unfortunately, in our small town dsl sucks major but still the unit was worth the investment.ADSL2/2 USB Ethernet Modem
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