Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: mac compatible?
Document: Probably a great headset, but I wasn't able to use it. It does not say on the box that it's not compatible with Windows 7 64bit. I bought it in a store, got it home and plugged it in and my computer instantly blue screened. Had to return.
The headset has worked well for me, so far. It's lightweight, but the mic seems to work very well and by making the earphones not adjustable, it seems make the device more sturdy. I plugged it into a USB port on my Mac Mini and I was able to use audio Skype right away.
I run Windows 7 through VMware Fusion 5 on my Mac for work. When I plugged this in and routed the connection to the VM, Windows was able to see that something was plugged in, but it wasn't able to engage it as an audio device. This made it fairly useless as a headset for me, so I sent it back.
Although I got it working by plugging into a different USB port and restarting my Mac, the headset is more uncomfortable than any headphones I've worn. Since Plantronics is such a well-established brand for headsets, I'm surprised at the design. The ear cups are small, and the band over the head holds them at a cocked angle, not flush against the ears. Weird!
I purchased this headset in spite of the negative reviews, thinking that perhaps they were flukes.After receiving the headset, I plugged it into my Mac and the headset did not work. I made modifications in the system preferences, and I can hear sound for about 2 seconds and then nothing. I've tried everything (rebooting, using different USB port, etc), and the headset is not functioning.
The price for these headsets was fair and I bought two, one used for watching online videos and making calls from my computer (Mac) and the other for interactive multi-player games (Windows PC)After just about a month of use Microphone on one (used for multi-player games) stopped working.On the other one the USB connection is bad and it just loses everything both audio and mic.I will not recommend these to anyone.
Bought these as a slight upgrade to the built in microphone on my macbook pro.They work great, and the sound control does communicate correctly to the mac.Microphone can be a bit too sensitive, and picks up "pops" however this can easily be eliminated by pointing the microphone boom a bit lower than normal.Make note that the USB plug makes connections on the other jacks a bit tight, however it is possible to have something plugged into next to it on my 2011 Macbook Pro.
I bought a headset because I wanted clear sound when using Skype, especially for job interviews. The USB interface makes this very easy to use with Ubuntu Linux (I assume it's as least as easy with Mac/Windows). Plug it in, select the input/output devices in the sound/volume control windows, and voila!Pros: Testing with Skype I found the microphone to be excellent: my voice is clear, and the microphone seems to pick up every nuance. Going to mute is a simple matter of flipping up the mike, which I thought was a lovely, intuitive way to do it.
I am a regular contributor to This Week in Media, a show produced by the Pixel Corps and often streamed line on Leo Laporte's TWiT network. After a considerable amount of research ahead of my first appearance, I picked up a Plantronics .audio 655 headset.I was not disappointed. This is an exceptional headset especially for those looking to start podcasting.Audio in both directions is crystal clear. The microphone picks up a considerable range of sound for a sub $40 product. No driver installs were necessary on my Mac, just plug in and point your application at the headset which appears as a "Generic USB audio device."
I know it's not my ports, as my other headset works perfectly in any of the available USB ports.For those of you saying they work fine with Windows 7 64bit, let me direct you to this:[...]and if you look right next to the area where it says 64bit/32bit, click on 32 bit, yes they are compatible with 32 bit.When recording something that you speak with or for streaming live games, the sound from this is extremely low and that's with my mic turned all the way up.
Answer: 100% compatible