When you say the 'module', do you mean the SR300 circuit board without the casing?
And you want to connect a USB lead to it so that it looks like this?
The individual parts that you need can be ordered for you from any Intel approved distributor company. Intel do not sell them directly themselves. Here is a link to the list of international Approved Distributors.
You will need to identify the code numbers of the parts that you need to order. I have dealt with a similar case to this in which somebody wanted to order the connector parts for an R200 model of camera module board. The connector is apparently called an IPEX, and the cable that connects to it is called the Interconnector Cable.
The SR300 data sheet document lists the part numbers of the IPEX connectors for that camera.
Here is a link to the full data sheet. The Electrical section containing the connector information begins on page 33.
You can find more information about the IPEX connectors at the IPEX company website. It looks as though the R200 and SR300 use the same IPEX part numbers.
The part that you linked to is an Interposer board for the R200. This discussion may be of interest to you. A user in the discussion thinks that the SR300 has a different interposer board to the R200 one's, even though the IPEX connector parts are the same.
A German website lists an adaptor board for the SR300.
On that page, they also list a cable.