EtcherPro is running the standard Etcher application on balenaOS. The functionality between EtcherPro and Etcher on a computer is the same, it’s just that the EtcherPro hardware is designed to take full advantage of the Etcher features. For instance, you can flash multiple drives with your computer using Etcher and a USB hub. The speeds won’t be great due to limited bandwidth and if one drive fails you won’t know which one it is. EtcherPro however, can flash multiple drives simultaneously and there is a dedicated LED per drive to indicate the drive status.
Can you confirm that if the flash or verify process on a specific drive fails, that light will show that its the one with an issue? If so, we’ll order an EtcherPro right now.
I am having the same issue as this person, Flashing multiple sd card - determining which one fails when flashing multiple drives in my USB hub the drives and the hub both have LED indicator lights, but they don’t show anything to tell me which of the 16 drives failed during the flash & verify process. Super frustrating.
Thank you! and thank you for supporting Open Source, which is what we are as well. 
Hi @NeonClary,
Yes, EtcherPro can do this. When we released multiwrites on etcher we immediately faced the problem you are describing. If you flash more than one drives and one fails, you just don’t know which one it is and you need to trial and error. So for EtcherPro one of the key features is exactly this. The LEDs show the status PER drive: is it mounted correctly, is it selected as source or target, is it flashing or validating, has it succeed or failed. Happy to answer more.
Cheers,
Konstantinos
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You’re awesome, thank you very much!