After having a look on YouTube at various methods I found it was not necessary to disconnect the fan or the antenna plate. I rotated the antenna plate out of the way and secured it with a piece of masking tape. I also found that I didn't have to move the logic board either. I lifted the HDD connector (gently) with a spludger . The original HDD came out easily once I managed to grip the plastic PCB cover (which isn't needed on the SSD) . Fitting the new SSD was easy using a masking tape 'handle' in the shape of an upside down 'T' . funnily enough the hardest part was getting the little plastic shroud on the left to sit nicely but even that was easy once I had used the masking tape 'handle' I'd used on the SSD. I always think the less you have to mess with the less chance of anything going wrong. Oh, and buy a antistatic wriststrap !