Replacement Enclosure for My Book

I have an old external drive WD6400H1U with WD6400AAVS for the internal piece. I’m NOT a techie…clearly because I used the wrong power cord and fried my book. Guy at Best Buy says to buy a new enclosure. I THINK this is SATA and 3.5". Any other suggestions here? I’m only going to buy this enclosure to hopefully retrieve any pictures I can and then buy a new drive to truly use. HELP!!!

This drive is a Western Digital WD Green WD6400AAVS 640GB 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive

So yes. This means you are correct. A 3.5 SATA enclosure should work.