yeah u just connect the device with a 3.5mm audio jack lol
I sold it years ago, but thanks. It couldn’t run half the content I was using. Guy I sold it to, sold it themselves after a couple months - same reason.
Estim Systems makes really good electrodes, but the box certainly needs a significant improvement. From interactions with the owner/designer, they’re more inclined to insist on being right than even acknowledge criticism from stimmers who have been unsatisfied with the device.
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That specific person works for E-Stim Systems, I’m quite certain.
Made back when the craftsmen really cared. 
and they charge you for an adapter to update the firmware.
This was my exact personal experience. They’re horrible to deal with and do not stand behind their product.
to be fair, it came with mine the 3.5mm jack to usb cable ur talking about. bu that was also a bundle i bought that was 500 dollars. that came with those the usb with software the cable and a power adapter. which was a waste because the 2b feels like shit lol
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