I think with the SATA to USB adapter you can use the SSD just like a flash drive ?

I've been using like that from past 6 months and never had any glitches with my RIG!

https://www.amazon.co.uk/USB-SATA-Adapter-Cable-Drives-en-GB-SATA-USB-3-0-converter/dp/B01N2JIQR7

Also you can the 40GB drive too & some other community members suggesting to use some good HDD too (haven't used it) & some still using the 32 GiG's flash drives which are expensive as a 40 GB SSD drive (atleast here in UK).

I guess its definitely not expensive than our 1 GPU card