If printers are both on a USB cable, then you can plug them both into two different USB sockets on your computer and use the computer software to change between them when you press print.
As said by Bernard. And this is what I would do.
If you definaty want to physically switch between two printers, then this switch should work.
https://www.ebay.co.uk/itm/370732574891?epid=2254442263&_trkparms=ispr=1&hash=item56516228ab:g:~h0AAOSwrklU-EVv&amdata=enc:AQAGAAACkPYe5NmHp%2B2JMhMi7yxGiTJkPrKr5t53CooMSQt2orsSafTQYbq3L7RBVAMi0K9cw302bzznF2hW0ucwbK6M297CP%2BE04NCMGRa3ykBVIzAn%2B0%2FO9ZZO4CztDfgiq6ClNPBFwoCIsOPtlmMoQ2pCDPUE%2FvZRgdGwhD0QYbrF5VbdGCQLm%2Br%2Bfj4jeOOsVdl3z%2BLF2ebpC0at3awwwVnBNlpG0Hlof%2BAx6p7ssejOtYfc8SyvEOVCnvCB%2B8JbMCL2FfKqt7Gf3Yyh%2BQC8mmdipHWETgCu1Dc9yqa39Or34qA0qOK9uM%2BBmDWyhW6OWMNhAZYR67jZA1ATldY45zLikbSvzXWQ6bW8PD%2FccW%2FJo%2FBgYZUOTY5%2Bjruor7imbE%2BSu7k6lO%2FOmvGjVNyL%2Bv%2Fw%2FeG3w3WKD%2B8hi7mNUPP0JzKZOr%2BqQxN4KRyzI0029s2NrnmpO8SBBC8TfbWMl0tIm5mEiI3L2AC0rq7Oybp%2FKav9%2FV3mNZW29h%2BI33Dgv47D%2Fgxc2YkjWe006y%2F7pEzU5Ri1LRERUSCeue66mpGxB4%2BXGC1SoesoafZAfuDhKXKXI98T9h%2BpLo%2FQoy8Qzh3ZCa1LYOmLhBvjZyep1HvaZXfDHi3uqegMWqYt2S0zZNij72nSbcGnIhxuX0KZ802QAvyDgqgRJjgP%2F3WBvRujYU0ezScZcDk8Z1jIth2cMFopagnYo6YEJc%2FbN3jj1nnM7ojv%2BHN1t%2BdoZbfWoAPWYzJKVtPZNKguHVZEY2yVrZJWU47sApuMmZPbwX%2BDOnWiPRNVX%2Bg4A2CUCz1Hz8gTnA4DV94ZpKBc6qxO%2BPTHxsWWXdkBuIAvD7gs%2Fe6dkZB9GT1IFbtFzbT5pNgDU3U9lbVE|clp:2334524|tkp:BFBMzq-q7q5f
And as you operate this switch your computer should detect the change becuase it would be the same as unplugging one and plugging in the next. And USB normally is okay with this.
But it might also crash the USB controller.
Afk