you can make a bootable usb with ubuntu at https://ubuntu.com/tutorials/create-a-usb-stick-on-ubuntu#1-overviewi found this for a external ssd bootable of ubuntu https://www.58bits.com/blog/2020/02/28/how-create-truly-portable-ubuntu-installation-external-usb-hdd-or-ssda selection of external ssd drives can be found on the microcenter website at https://www.microcenter.com/search/search_results.aspx?N=0&NTT=external+ssd&NTK=all&sortby=pricelow
@Jenlcmc Ninja has some good info here! I'd also recommend taking a look at the guide below for information about how to add the additional drive to your PowerSpec. https://community.microcenter.com/discussion/2868/tech-article-how-to-locate-the-additional-drive-bays-in-a-lian-li-atx-205-casePlease let me know if you have any other questions!
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