Works great with Windows 7 64bit... but only with older version of Prolific driver.
340359
Make sure you DO NOT USE the Prolific (USB to RS232) driver that can get auto installed by Windows 7.  Use the Prolific driver that is available on the Milkor web site.  Apparently the "newer" versions of the official Prolific driver, checks something on the chip to determine if it is a "legit" Prolific piece of hardware.  Well, can't say for sure, but the latest drivers don't believe the chip in this cable is "legit" so it won't work.  The older version which is on the Milkor site doesn't do this "checking", so it will work with the cable.

Make sure you don't accidentally auto update the old Prolific driver to the latest by mistake.  It is easy to start clicking things to update via Windows Update.  If you do, then your cable won't work and you will have to revert the driver back to the old version.
1532758
No issues on Windows 10 64bit. Drivers instantly recognized and fast, steady connection... Been using it for several weeks now. Thanks!
3786859
Works very reliably in both Linux and Windows 7. Mine came packaged with a disc that even contained the Linux drivers and instructions for installing them. This chipset is not supported directly by the Linux kernel as of 2-6-16 but the firmware is easily added. From then on, it's smooth sailing.
1792985
This will work on windows 7 x64, but it takes special instructions.  There is a guy named Rick Rickoff  who has posted in this review section his email address for requests to obtain his instructions.  They do work. In that he is the author of the install instructions, I will not repost them without his permission.  This device does work when the drivers and program are installed per Ricks Instructions.
585188
I bought a cheap HTPC, and got this little dongle to add wireless connectivity.  The HTPC I ordered shipped with XP on it, and the dongle plugged right in, installed itself, and worked fine.  I tested it and some other added components, then I shut the computer down and installed Windows 7 Ultimate, 64 bit.  The dongle does not work AT ALL with 64 bit Windows.  There are no drivers to be found, on the internet at large, or on the manufacturer's website.  Come on, Buffalo... How hard is it for an entire company to code one teeny tiny driver?  They could at least have had the decency to include this incompatibility in the item description, since I learned it's a common problem once I started researching.  Dongle fail.  Haven't decided if I'll go to the trouble of returning it, or just add it to my growing pile of stuff I might have need for one day.
3177023
This Serial/USB adapter claims Windows 7 compatibility but crashes with IO errors within 15 minutes of use.  I've used with multiple console session controllers and multiple vendor laptops and PCs.  The drivers are the problem.

This unit comes with the exact same Prolific drivers that StarTech uses.
511773
Many users cannot get this card to work with Windows 8 or 8.1 using M-audio's Win 7 drivers, but it has worked fine for me on an ASUS P8Z77-V LK.  The 6.0.8 drivers were stable for me in Win 8 64-bit, and the 5.10.0.5074 drivers are stable in Win 8.1 64-bit.  If it works with your hardware, this is a great card that combines digital and analog input/output, including midi.  However, if you don't already have a motherboard with a legacy PCI slot, or you don't already own the card like I did, you may be better off buying a current-generation audio interface.

UPDATE:  the 5.10.0.5074 driver is stable for me (so far) in Windows 10 on the ASUS P8Z77-V LK motherboard.
3656600
I had a few PRO/1000GT NICs in computers running Athlon64 processors on motherboards with 4GB-8GB RAM.  Worked perfectly in Windows XP 64 and Solaris 10 / Opensolaris.  These machines recently received an upgrade to Windows 7 x64, and the NICs stopped working.  They would show up in the Windows device manager, and the link lights worked fine when connected to a switch, but no packets ever hit the wire.  Hence, no IP address assigned by the router, and even when given a static address no data would be sent out or received.  (This was all verified by wireshark.)  During one test, I decided to cut the machine down from 4GB to 2GB RAM, and the NIC worked like a charm.  Going back up to 4GB killed the connection again, so it definitely points to a driver issue on Intel's part.

Given that Intel does not plan to update the drivers for this card (or most of their other PCI-interface NICs) on Windows 7, I would avoid purchasing this card and go for something that is a bit more futureproof.

Overall: 3 stars. It works on many platforms, and is great when it does, but has a major issue with Windows 7 x64 in an increasingly popular configuration.

------------------

Edit: After some more investigation, I believe it's a motherboard driver issue with the systems I had.  The systems in question had nVidia Geforce 6150 / nForce430 (MCP51) chipsets.  I recently tried out the NIC in a machine with an AMD 785 / SB710 chipset on Windows 7 x64 and 4GB RAM, and it worked without any hassle.  So bumping up to 4 stars.  Would be 5 stars if compatibility was perfect, though I can't really tell if it's Intel or nVidia is at fault.
2352829
I installed this card on my Windows 7 64-bit PC.  The chipset is Texas Instruments and Windows 7 correctly identifies the chipset and loads the TI host driver. However, with this driver, the performance is around 1-2MB/sec which makes it unusable.

The card also bundles the Unibrain drivers (v5.62) but you can download the newer v5.63 driver from the Unibrain website.  The drivers are supposed to be digitally signed but Windows Device Manager reports that they aren't and therefore won't load them: Code 52 is reported.  I tried the workaround of booting Windows 7 using F8 and turning off driver verification but then Windows 7 bluescreens during boot.

I'm sure it's the driver that's the problem but don't buy this card yet if you're going to use it with Windows 7.
2826647
Although this product is listed as working with Windows 7, there is a slight catch. The drivers will only work on 32 bit versions of windows. If you have Windows XP or earlier, you should be fine, but laptops often run the 64 bit version of windows 7, which is 100% INCOMPATIBLE with 32 bit drivers.. Fortunately I had a desktop running Windows XP (and it works perfectly there).

If you don't know which version (32 bit or 64 bit) your version of windows is, don't buy this until you look it up.
2287669
This graphics card worked great when I installed on Windows 7. The upgrade advisor (Microsoft) stated it is completely compatible with Window 8, no upgrade needed. Problem is, that as soon as I installed Windows 8, the drivers won't work.

It was excessively difficult to contact Asus, but when I finally did get a response, it was to inform me that no Windows 8 driver was available and that I should just be patient. I was not happy with that answer.

To make a long story short, tech support at Microsoft, AMD and ASUS were equally not at all helpful. I finally discovered that the problem was with a corrupted file in Windows 8. The only thing that worked was to do a "Refresh Windows" which blew away Windows and all my installed programs, but saved all apps and data. That fixed the problem, only there is now a lot of work to do to rebuild my work environment.

All in all, the card works great again now, but it would have been very nice to have had some sort of support to help me find the problem, instead of me having to spend a couple of weeks searching for an answer which never came. If not for the cruddy support, I would rate it 5 star.
4346933
I popped this adapter into an HP d5000t running Windows 7 Ultimate 64-bit (recently upgraded from Vista Ultimate 64-bit). My impression was that this would auto-configure on Windows 7, without the use of the supplied driver CD. Almost. One device entry, "Marvell 91xx Config Device", failed to configure. In Device Manager, I selected the entry, chose "Update Driver Software...", popped in the installation CD and pointed the update at it. Problem solved. Since the install, I've been running a number of diagnostic and benchmarking tests on a drive mounted in a Thermaltake BlacX eSATA external "enclosure" without incident. I'm quite satisfied with the device.
1694657
I have windows 7 professional 64-bit. Works as intended. Plug and play to use all day.  There is a blinking light that one might not be fond of if your desktop/laptop is in the bedroom. Fortunately, that is not that case with me and I have absolutely no problem with a tiny blinking green light anyway.
26954
I installed the card on an older Gateway machine with Win98 installed. The card was recognized in the Device Manager but not seen in the Network area. After some surfing I discovered the chipset it uses, Realtek 8139A, downloaded that driver and after installing, everything was recognized and now my network is humming along with no problems. I would have given the card 5 stars if it wasn't for the small driver issue.
2802526
ACTUALLY WORKS.  I'm reviewing a slightly different version (white with a rectangular button) but it appears to be basically the same thing.  This product is not fancy, but it actually functions on Windows 7 64bit as of 2014-03-27.  If you want to connect old VCR's and similar equipment this will actually do what you need, unlike a bunch of other crappy solutions that don't have modern driver support.
3386059
Works on Windows 7 64-bit with 4GB RAM, but ONLY if you download and install D-Link's Feb 2011 (or more recent) drivers BEFORE you install the card.  It is also a good idea to remove or disable any other NIC you may have on the same computer.  Unless, of course, you need the other NIC.  Since most machines now have a NIC on the motherboard, this involved disabling the NIC in BIOS.  For example, with Phoenix BIOS, you would set "Onboard LAN Controller" to "Disabled".

These February 25, 2011 drivers from D-Link are the first to support Windows 7, so please take that into consideration before reading older reviews.  Last night, when I was deciding what to buy, to replace my failing NIC on my Intel motherboard, reading the reviews of all the different affordable Gigabit NICs, I came away wondering if there was any that I should buy, i.e. - that would actually work on a 4GB 64-bit Windows 7 system.

For the record, my DGE-530T Hardware Version is listed as B2.
4900965
so far have tested on a windows vista and 7 machine and no luck with either of them.  Update  finnally got this thing to work but not with the included drivers and software, i had bought another one of these from here but a diffrent seller and that one worked flawlessly so i tryed the drivers from it and it worked fine.