Bitcoin Miner is a very time sensitive item and UPS requires a telephone number to ship the package, so when there is any issue arise during the delivery time such as the driver can't find your house or the business, they can call you and ask you what to do or how to find you to deliver the box.
Just tried to order two with BTC to the US. Couldn't! Appears to require I enter a mobile phone number, something I neither have nor need/want. What is this shit?
International shipping requires that there be a contact number that the recipient be available if there is an issue during shipping. You should not need a mobile number specifically. Just enter you home or business number in all the phone fields. I regularly have things delivered to the US with out issue with a mobile or home/business number.
Thanks guys! I actually emailed Bitmain back when I hit the problem, and it was straightened out. Although the input field is specifically labeled "mobile phone number", it's OK to enter a land line number.
Have you tried closing in the top so the front fan air flow is kept within the frame and exhausted out the rear? Also, how about reducing the airflow above the heat sinks (reducing the upper front fan opening) so as to improve cooling efficiency (greater air flow through the internal heat sinks)?
Beyond that, how about an S3 fan both on front (push) and rear (pull)?
None of these seemed to make any significant difference. The loudness and temperature seems almost entirely dependent on the one fan on the front.
Damn... I was planning to do this (close the top of S5 case to provide more directed airflow) with my test unit that arrived much later than to other forum members...
But I still have a couple ideas on how to play with S5.

Can't wait to get it in my hands (it's not depends on me unfortunately......).
If you find any combination of things that help with either/both noise and reported temp, please let us know. I've ordered a couple S5 and plan to try S3 fans and homemade covers. My environment gets very warm in summer.