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I'm helping someone build a computer and they absolutely insist on having an internal Bluetooth adapter. I've been searching around for a PCI-E/PCI based Bluetooth adapter but I've had no luck finding one - I've found some discontinued ones but they have giant antennas coming out the back - the person I'm building the computer for doesn't want that.

I've been repeatedly insisting on him simply getting a USB Bluetooth dongle, but he doesn't want one taking up his external USB slots.

This is the motherboard I'm using for his build: http://www.newegg.com/Product/Product.aspx?Item=N82E16813157303

My question is if it's possible to use one of those laptop PCI-E cards in a motherboard like this that has PCI-E and PCI slots, or if the form factor is completely different and won't fit?

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You could settle with him and use a USB header on the mono to a dongle (either inside or to the back panel). Obviously not an answer since it's mostly off topic of the direct question. –  nerdwaller Dec 8 '12 at 2:35
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3 Answers

up vote 2 down vote accepted

Possibly - there's mini pci-e to pci-e adaptors that exist which basically convert a mini pci-e card to a pci-e x1 card. They DO seem very specifically designed for wifi, with wifi antennae built in, but as a simple electrical connector it should work.

enter image description here

an alternative might be an internal usb hub - I believe nzxt makes a USB 2.0 model

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I had a feeling that was the case. He's building an HTPC, so I doubt there will be room in the thing for an internal USB hub. I'll go ahead and let him know. Thanks as always. –  White Phoenix Dec 19 '12 at 5:00
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  1. The form factor is completely different.
  2. PCI and PCIe are completely different qua design and signaling. Thus only consider miniPCI and PCI slots. And mini-PCIe and PCIe.

Look at these two pictures (source: Wikipedia)

MiniPCI_andminiePCIe

PCI_and_PCIe_slots

The only way you are going to get a mini-PCI card working in a PCI slot is by using an (expensive) bridge card. I have done that in the past, and it set me back Eur 130.

Compare that to a Eur 5 to Eur 10 USB dongle. Optionally add in an extra USB hub. The USB version will win every time.

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Could also add a cheap USB card to get more USB ports. –  Brian Dec 8 '12 at 2:41
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Aye. And a cable to get the USB bluetooth dongle outside the metal case. But I can't remember the last time a modern desktop ran out of USB ports. They come with up to 14 ports. Subtract two for the mouse and keyboard and you still have a dozen left for pen drives etc. –  Hennes Dec 8 '12 at 2:44
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I don't think so because according to this article a PCI Express Mini Card will only fit into a PCIe ×1 slot and the ASRock motherboard doesn't have any of those, only PCIe x16 ones which have a different form factor.

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(Normal) PCIe x1 cards fit in x1, x4, x8 and x16 slots. Thus the presence of PCIe x16 slots is not a problem. Different wiring however (to provide connections for PCIe ×1, USB 2.0 and SMBus) is. –  Hennes Dec 8 '12 at 3:40
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