Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: This reader does not work with windows 7, does anyone know of a reader than does?
Document: Even though some reviewers had problems, I decided to try this card reader anyway. Luckily, I have had no problems getting it to work with either of my two computers that are both running Windows 7, 64-bit. I have been using this new reader with a new SDXC memory card and a USB 3.0 plug and have not had any issues.
I am using this Card Reader for a 16GB SanDisk Extreme SDHC card. I connect to a Desktop with USB 2.0 and WIN 7 Premium (64 bit). I find some connectivity issues when using with this configuration. Recognition of the Reader is not always 100% and at times Windows Explorer freezes. When it does work, it appears to map 3 drives.
It is clear from the problems noted here, and the vast amount of postings to the net, that this unit will not work with Windows 7. It did fine initially, but now does not play well at all with updated Windows 7. I have been waiting for months for Transcend to update the firmware, and they have failed to do so. If you are running Windows 7, stay away from this unit.
I normally don't bother to write reviews, but in this instance I felt it necessary. I ignored other folks warnings, and took the risk of buying this unit, and would like to urge you to reconsider any thoughts you may have about purchasing it. I've read the positive reviews, and yes it seems to work great when hooked up to my Windows 7 x64 machine - specifically when used to read Transcend 8GB and 32GB SDHC cards.
Purchased this to use on a USB 3.0 port along with 400x Transcend CF cards that I use in my Canon Camera. The computer (Windows 8 machine) recognized it immediately and every time I insert the card it immediately is read. You know the reader is powered as there is a blue light on it that lets you know. Downloading a couple hundred photos takes no time at all and is significantly faster that plugging the USB cord directly into the camera.
This item reads any memory card I have- including the newer SD HD and SD XC1 cards! Windows 7 recognizes the reader immediately! Includes a short USB Micro-B to USB 3.0 cable -- operates at SuperSpeed (5 Gbit/s) with a USB 3.0 interface connection.
Is a good tool for read my HD card memory. Before buy it I had reading the files record with the own camera and this is more work to do.Now I know this reader card is a good reader for my memory cards in HD (real full HD) from my Sony EX1R.
for some reason, it takes awhile for this card reader to be detected (Windows 7). and when it does, it won't read some SD cards (windows goes into an infinite detection mode.) However, it does read my transcend 32GB card. Coincidence? maybe....Update: 1/14/2013Inserted an SD card and the reader destroyed the content of the card...sending it back..hopefully, the replacement will be better...
I purchased this in 2012 and have been using it with my Lexar 600X SDHC card and my massive D800 files get moved real quickly. Performance is not an issue, being on is! The one problem I was having with this is when my windows 7 attached PC goes to sleep and then wakes up again. Reader is not accessible! I have to keep re-attaching the USB cable to get the little blue LED to show up.
I'm using this on my custom built PC. USB 3.0 speeds will spoil you! I haven't done any &#34;lab&#34; style testing to see just how fast it is, but getting up to 90mb+ is no sweat. I've used this Transcend card reader with no driver problems on Windows 7 SP1 x64 and Ubuntu x64 14.04. Just plug-n-play.
Answer: Check to see if you are inserting the card in the correct slot. Make sure you are using a working USB port. Try inserting an external hard drive in the same slot and see if it boots up. Also make sure you have current USB 3.0 drivers installed. Check your card with another computer or a card reader you know works. If you have the card in the correct slot, have the cable in a working USB port, have the current drivers and can't access your card, but the card works with another reader then it's possible you have a defective unit.