Category Archives: D-Link

Slow Network or Internet Download and Read Speeds using Intel Network Adapter

You may find that Network and/or Internet speeds are very slow when using an Intel Network Adapter.

This appears to be an issue with the Speed and Duplex settings, after a Driver update or installation you may notice that the Speed and Duplex is set to 100 Mbps Full Duplex.

100 Mbps Full Duplex











When running a LAN Speed Test it only reports a Read speed of 5 Mbps and Internet Speed tests also report terrible Download rates.












Upon changing the Speed and Duplex setting to Auto Negotiation the issue is resolved

Auto Negotiation










LAN speed test and results after making this change both indicate the issue is resolved



DD-WRT Firmware Revision Histroy for the D-Link DIR-615 Rev D1 D2 D3 and D4 (Includes Virgin Media Supplied D-Link DIR-615 Router)

DD-WRT Firmware Revision Histroy for the D-Link DIR-615 Rev D1 D2 D3 and D4 (Includes Virgin Media Supplied D-Link DIR-615 Router)

r20119 V24-preSP2 – 10-12-2012 –

r20086 V24-preSP2 – 10-06-2012 –

r19519 V24-preSP2 – 07-20-2012 –

r19342 V24-preSP2 – 06-08-2012 –

r19327 V24-preSP2 – 06-06-2012 –

r18777 V24-preSP2 – 03-19-2012 –

r18767 V24-preSP2 – 03-08-2012 –

r18740 V24-preSP2 – 03-08-2012 –

r18687 V24-preSP2 – 03-08-2012 –

r18024 V24-preSP2 – 12-20-2011 –

r18007 V24-preSP2 – 12-14-2011 –

r18000 V24-preSP2 – 12-12-2011 –

r17990 V24-preSP2 – 12-09-2011 –

r17967 V24-preSP2 – 12-07-2011 –

r17201 V24-preSP2 – 06-14-2011 –

r16994 V24-preSP2 – 05-08-2011 –

r16785 V24-preSP2 – 04-09-2011 –

r16754 V24-preSP2 – 04-09-2011 –

r16454 V24-preSP2 – 03-17-2011 –

r16214 V24-preSP2 – 02-17-2011 –

r15962 V24-preSP2 – 12-24-2010 –

r15940 V24-preSP2 – 12-18-2010 –

r15778 V24-preSP2 – 11-21-2010 –

r15704 V24-preSP2 – 11-09-2010 –

r15693 V24-preSP2 – 11-06-2010 –

r15506 V24-preSP2 – 10-26-2010 –

r15501 V24-preSP2 – 10-25-2010 –

r15437 V24-preSP2 – 10-12-2010 –

r15407 V24-preSP2 – 10-09-2010 –

r15362 V24-preSP2 – 10-05-2010 –

r15334 V24-preSP2 – 10-02-2010 –

r14929 V24-preSP2 – 08-12-2010 –

r14896 V24-preSP2 – 08-07-2010 –

r14815 V24-preSP2 – 07-16-2010 –

r14684 V24-preSP2 – 06-30-2010 –

r14594 V24-preSP2 – 06-12-2010 –

r14569 V24-preSP2 – 06-09-2010 –

r14537 V24-preSP2 – 06-03-2010 –

r14473 V24-preSP2 – 05-25-2010 –

r14289 V24-preSP2 – 04-16-2010 –

r14280 V24-preSP2 – 04-15-2010 –

r13637 V24-preSP2 – 01-16-2010 – (d2 Revision Only)

Intel Network Adapter Diagnostics May Wrongly Report that the Network Cable is over 100 Metres Long

When you run a Cable diagnostic using the Intel PROSet Network Adapter Diagnostics you may find that the utility incorrectly reports that your network cable is over 100 Metres and/or that the Cable is faulty/poor.

This issue can occur if you have a network switch that implements “power Saving” or “Green Ethernet” this feature is meant to reduce the power to a network port that is supporting a device with a short network cable run.

This “power saving” or “Green Ethernet” feature can cause the diagnostics to fail and can sometimes contribute to network drops and/or poor network throughput.  If you have a managed/smart switch then you can normally login via a browser and “Disable” this feature to correct the issue.

How to update Network Adapter and Wireless Adapter Drivers within Windows

You may be finding that your network or internet connection is slow or unreliable, you may also find that your computer responds far more slowly whilst you are using network resources because your network adapter drivers are not fully optimised. Wireless network adapter users may find that they cannot connect to some wireless points and/or that wireless range is not what they expect.

Any of these issues could be related to using outdated network adapter drivers so update them.

The primary types of network adapter that you will find in use today are PCI, PCI-Express or USB.  Even wireless and cabled network adapters that are integrated into a laptop or computer will still use one of these fundamental bus types.  Despite who you bought your laptop or computer from (i.e. Dell, HP, Acer, Sony) you will most likely find that a thrd party supplied the network adapter module or chip.  This is actually a good thing because it means that you are not restricted to the often outdated drivers that your system manufacturer will issues when your machine is first produced but then subsequently forget about and never update.

The process to update the drivers usually involves downloading and extracting the zipped/compressed driver file and then using Device Manager to verify and update the drivers are compatible and will install.  You will usually find that the extracted drivers folder includes an “inf” file and various “dll” files.

Once you have the drivers downloaded and extracted on your machine its time to launch Device Manager and find the network adapter that you wish to update the drivers for. On my example machine we want to update the Realtek PCIe Gigabit Adapter so we will double click on it and verify the current driver version.

Here we can see the driver version is “7.23.623.2010 and the date the drivers were released is “23/06/2010”.

Now we want to click “Update Driver” and select the location of the new drivers that we downloaded earlier. To do this we need to click “Browse my computer for driver software” and then selecte the location of the extracted driver files.

Once we have carried out the update the new version will show along with the updated driver release date.

You will usually find that the network adapter in your computer or laptop is manufactured by one of the companies listed below, next to each manufacturer is also a link to the official driver download/support page.