ALFA AWUS036H USB adapter referee

I have a Compaq Presario SR5610F with improved power (Antek 500 watt) and Vista 32 bit.  I bought an ALFA 802.11 b/g usb network adapter that is based on chipset Realtek RTL8187L.

That is the problem.  When I plug the adapter into the USB port (any) and load the drivers, the adapter only cycles on and outside.  Which means it appears and disappears on the computer continuously at a rate of about once per second.  If Device Manager is open, it appears and disappears under network adapters.  I tried all the drivers I can find... same result.  I even let windows choose the driver from Windows update... even.  I did a restore of the entire system (using another hard drive) back to the State nine factory... made no difference.  Tried another card, did the same thing.  Is there some kind of incompatibility with the presario and 8187 chipset?

ImaginaryKaos wrote: I could understand if one of these maps to this problem, but three of them?  Three different cards the same when plugged into a USB ports reacted.  The constant cycling on and outside.  Could they just draw too much current from the port?  They are supposed to be rated at 500ma (different from 1000mw), but who knows?

I saw a review on this device and they knew the same problem you seem to be.

"The Realtek RTL8187 Wireless 802. 11b / g 54Mbps USB 2.0 Network Adapter has malfunctioned and exceeded the power limits of its hub port. You should disconnect the device. »

I bypassed this problem by buying a hub usb powered from best buy.

Just a thought

Tags: HP Desktops

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