I worked at an ISP in 1996, where we would buy external Boca 28.8k modems in bulk from retailers and take the boards out to put them in our racks because they

I worked at an ISP in 1996, where we would buy external Boca 28.8k modems in bulk from retailers and take the boards out to put them in our racks because they were cheaper - yet identical - to the "ISP-grade" versions that Boca sold as just boards. Back then we referred to it as shucking the modems, so it's definitely not a new term in IT/computing (never mind the actual origin of the word).