AN UNBIASED VIEW OF VAPEPENS FOR SALE ONLINE

A 3rd-get together serial interface card for that Apple II. The person Reduce the wire traces between the thinly linked ⧓ triangles at X1 and X3 and soldered across the unconnected ◀▶ pads at X2 and X4 at the middle of the cardboard. Reverting the modification was harder.Before the advent of Plug and Play, adding a fresh gadget to a computer