Looking for a connector (see picture)

[desperate]

I'm looking to source a connector.  It is 9/16 wide, 3/16 tall, 4 pin.  Sort of looks like a PC board edge connector, it would grip both sides of the PC board.  Note the top right connector is missing a small piece of plastic that the other three have... but it should be there, it broke off. Doesn't affect the function (so far).
Note the top corners are beveled, otherwise it would be rectangular.

This particular one, and my primary use is for a power connector for a ResMed AirSense 11 CPAP machine.  Only the outer two pins are actually in use. But I think I've seen connectors like this in other situations, I can't remember where, though!

[Terry Bites]

Whats it from?

[Brumby]

I feel I have seen that somewhere - but for the life of me, I just can't place it.

[pcprogrammer]

At first I thought firewire, but that only has three pins per side.

[CaptDon]

Is that a shielded gigabit cable?

[desperate]

I'll add this to the posting... it's a power connector for a ResMed AirSense 11 CPAP machine.  Only the outer two pins are actually in use.