The PlayStation 4 Pro is out this week and it comes with a 1TB hard drive installed as standard, but if that isn't enough storage for your growing games collection then you can replace it, as with previous PS4 systems. You'll need a 2.5 inch Serial ATA internal drive which is 9.5mm or thinner for this, and the largest capacity widely available is 2TB - a great choice is the Seagate Expansion 2TB external hard drive, though you'll need to prise it out of the external case before installing it.
Note: if you're switching from a previously upgraded PS4 then you can transfer your existing hard drive to the PS4 Pro, but the system will format the drive before you can use it so you'll need to back up your data to the PS+ cloud and/or an external drive to not lose it.
Once you have your replacement hard drive ready, grab a small crosshead screwdriver and follow these steps:
Remove the plastic cover panel
On the rear of the PS4 Pro you'll find a plastic panel covering the hard drive bay - use the small tab on the end next to the ethernet port to pop the panel off.
Remove the large screw
Using your crosshead screwdriver, remove the large screw holding the hard drive caddy in place.
Slide out the hard drive caddy
Hook your fingers on the two prongs at the end of the caddy and use them to pull and slide it out of the PS4 Pro.
Remove the four small screws from the caddy
Remove the four small screws holding the hard drive into the caddy, then slide the old drive out.
Insert the new hard drive into the caddy
Slide your replacement hard drive into the caddy then use the four small screws to secure it in place.
Insert the caddy into the PS4 Pro
Push the caddy firmly back into the PS4 Pro, until it engages and the large screw hole lines up, the replace the large screw.
Replace the plastic cover panel
Finally, replace the plastic cover panel by hooking it in on the right hand side then clicking it into position.
Install the latest PS4 system software
To get your new hard drive up and running, you'll first need to initialise your PS4 Pro and perform a new installation of the system software. Head to the PS4 System Software Update page to download the update file - make sure you use the larger file listed under 'Perform a New Installation of the System Software' and follow all the instructions as listed.
With the initialisation complete, you can go into Settings and select System Storage Management to confirm your upgraded hard drive capacity, and that's it - you're ready to download/install your games and get playing!
If you're upgrading from a previous PS4 system, then here's how you transfer PS4 content to your PS4 Pro.