Thanks for the quick reply.
I have seen one that is a refurb for sale on e-bay, but it comes from Shenzhen in China and I dont think I would be succesful in getting a refund if it was faulty. Surely they must be available from Acer?
Sometimes SSDs don't fit because there's plastic near the connector in the notebook. If you look at the HDD it doesn't have anything below the connector but SSDs are like a brick so there can be nothing in its way.
I know it's a poor description but it's hard to put into words. Check if anyone posted about issues fitting SSD drive or about having to remove a casing form SSD in order to fit it into 5942.