It's a SATA HDD with 500 Gb capacity, looks like a standard form-factor 2.5 inch.
If I am correct, I see absolutely no problem in doing the swap. You trade some capacity for great portability and boot time, better battery life. I did this in my Toshiba lappy once.
Just make sure, when all is said and done, to disable the automatic defrag schedule. Defragging an SSD will degrade it's performance.