I also made a cable for my HP 48SX. I also used individual female pins from some other connector, soldered the wires to them and then I molded an epoxy "body"

I also made a cable for my HP 48SX. I also used individual female pins from some other connector, soldered the wires to them and then I molded an epoxy "body" on top of them while they were plugged into the calculator (talk about living on the edge). I still have the calculator and the cable. For some time the calculator had some display issues after being accidentally dropped but I powered it up a few months back and it seems to have fixed itself. I recall how much I wanted to get one back in the day and how much fun it was.