Hello,
Ever since I installed the 5300 the wifi light on my XPS M1330 keeps flashing whenever there is a file transfer. Its very annoying! (If you have bittorent on the thing stays flashing, like its having a seizure)
How do you disable the thing?
Windows 7 has 12.1.0.14
I upgraded to 12.2.0.11
Same thing

Any ideas?
Hey there... This is my first post here.
Which form factor of the card did you get, the full-height or the half-height one?
I've also experienced this blinking WiFi light after replacing stock Dell 1510 Wireless-N card in my Dell Studio 17 with Intel WiFi Link 5300 that I bought from ebay.
Turns out that this card is an Engineering Sample and it's actually clearly printed on its label and also on the seller's page. I didn't see it upon receiving it and even when I was installing it.
For few weeks I could just use this card as having a kind of activity light for WiFi was a cool thing until I experienced few bad connections to my WRT310N wireless router. The symptom was although it could establish connection to the wireless router but no network activities could be performed.
Then I did some searching on ebay and able to find the non-ES version of this 5300 card. I bought it to replace the ES version, and voilà...!!! No more blinking WiFi light and also no more hangs on the connections.
So far on ebay I've seen many ES version of Intel WiFi Link 5300 cards in the full-height form factor, while more and more sellers have 'the real version' in half-height form factor cards as they are Dell parts.
And also watch for fake labeling as being told by few 'honest

' sellers that this kind of practice is being done by many other sellers as the full-height non-ES version of Intel WiFi Link 5300 card is hard to get.