Bluetooth module features

Did that. Under Bluetooth>Generic Bluetooth radio>Properties I see "CSR." Nothing I see gives a hint of module identifier or A2DP.
Under Network Adapters, I see "Bluetooth Device (PAN) #2" and "Bluetooth device (RFCOMM protocolTDI) #2."
Don't know which is the adapter and know no way to determine A2DP.

I suspect so, but I think it's on. Can connect my phone, keyboard, mouse to the PC via bluetooth. And I'm using the keyboard as I type. Problem isn't bluetooth is "Off" - problem is I can't tell if it supports A2DP.

What is "A2DP"?

The Advanced Audio Distribution Profile is a Bluetooth profile that allows for the wireless transmission of stereo audio from an A2DP source (typically a phone or computer) to an A2DP receiver (a set of Bluetooth headphones or stereo system). Such devices typically also support the AVRCP profile as well in order to allow for track selection and such. A common misconception is that A2DP support is available on all Bluetooth 2.0 devices, which is not the case, and that A2DP is only available on Bluetooth 2.0 devices, which is also not true. A2DP support can exist in older versions of Bluetooth, it just was not commonly supported.

Also known as: "Advanced Audio Distribution Profile"
http://www.mobileburn.com/definition.jsp?term=A2DP

You aren't able to get sound from it at all? If so, can't you tell by listening if you are getting mono or stereo?

I've been incomplete in my question, mostly, because I thought the answer would be easy.
I want to "hook up" my PC to my stereo speakers. The 'old fashioned' way will require running wires 20' across the floor. I want? to buy a bluetooth receiver and connect it to my speakers. Music without the wires. The manufacturers of the BT receivers require the PC to by A2DP-compliant. Thus, I will get no sound until I buy the receiver but won't buy the receiver until I have some confidence it will work. Since the PC is 3 months old, I'm HOPING A2DP comes standard, but don't want to guess wrong.
All that to say, this is why I want to determine if my PC's BT module will, in fact, support A2DP.
BTW, thanks for the quick replies. Unheard of in most fora.

Is to take the laptop into the store with you and test it out, if Lenovo can't tell you for certain.

In my part of the world, the BT receiver is available only my UPS/FedEx.
But I had a (bad?) idea. I know my phone has A2DP. And I THINK I know I can't stream my PC to my phone. But, if I can stream music from my phone to the PC speakers, would that require the PC have A2DP?
Short of that, I'm back to determining the capability of the BP module.

I would think whatever the stream was, it would be interpreted as received by the PC and since it could do stereo, it would play it as such.

I was afraid of that. Yeah, I found more discussions than I could read on the subject, but none telling me how to determine capability.
Model #? That was one reason for the original post. I tried "Details" under device Properties but found no model #. How can I find the model #?

And when you register it at Lenovo. While I know it can do A2DP since it has RFCOMM and more since I don't see any OS or model # I can't comment further. And that doesn't mean it can't do A2DP. It just means no one might find a step by step.

Why not chuck it all and get another bluetooth dongle. Here they are 2 bucks. Again, not a hardware issue.

I know the PC model # - 10CNCTO1WW. Windows 8.1.
I've seen a post ALL 8.1 PCs are A2DP compliant and all newer BT modules support it but others expressed disbelief. Since you know " it can do A2DP since it has RFCOMM," I'll take that as strong enough to go for it.
BTW, considered a BT dongle (have one on the other PC), but I though the PC still had to support A2DP.

The one thing is certain is that if they don't implement in the driver it's not going to work.

10CNCTO1WW looks close enough.

But you are right. No one writes a decent manual today. I use dongles like http://www.amazon.com/TaoTronics-TT-BA03-Bluetooth-Adapter-Energy/dp/B00ISLWBS2/ because diving under the hood, searching for drivers costs more than adding this dongle.

Lenovo as far as I can tell never documented what's in this machine.

http://devid.info/model/140557 appears to be for your desktop and I see A2DP listed. (Hint, see "Advanced Audio Distribution Profile (Source)")

If you have a Linux distro on CD, DVD, or USB and can boot to it, then open a terminal and run these 3 commands.

lsusb
lspci
inxi -v7

and you will get a lot of info about your system including what you want, and maybe you could copy and paste it into a text file so you'd have later when not running Linux.