Thought I would share my experiences with using Asmcom. Made an enquiry on Thursday about possibly ordering a USB 3.0 External Vantec DX2 Enclosure 5 with the Pioneer BDR-S12UHT on firmware 1-03. Received a quotation a little while later, after a few clarification emails, confirmed the order and paid via PayPal which Asmcom (provided excellent instructions on how to use).
A few hours later I had confirmation emails off them with instruction on how to use etc. and a tracking number. The unit was posted on Friday with a free upgrade to next day delivery and has just arrived today Saturday (I live in S Wales, UK).
I've plugged the Pioneer in and worked straight away stright out of the box. MarkMKV recognized the drive no problem's and I'm just ripping my first UHD Blu-ray as trail -the drive is very quiet can't hear it all while the ripping is going on!
Asmcon has provided excellent instructions and support all the way through so would defiantly recommend using them and this set up!