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HP48 to USB Cable
HP48 S/SX/G/GX DIY Cable Plug by BoVisfeldt | Download free STL model | Printables.com
Conn4x Video Guide with XMODEM under Windows 10 (USB Cable for HP48) – FULL Tutorial. - YouTube
1x DB9 Serial Cable for HP48 Environmental Case (HP 48GX 48SX 48G+ 48G 48S) USA | eBay
HP Calculator / C-Kermit file transfer
HP 50g RS-232 Serial Cable
DEANJIMMY@nerdculture.de on Twitter: "Well, the batteries were gone and I lost #BurgerTime on my #Hp48 calculator😨 I found the cable/docs, remember to transfer the file with 9600 baud by a modem terminal