Yes, this is a cable that will go from a Roland device with an 8-pin serial port to a Mac's modem or printer port. It looks like a pretty standard cross-wired serial cable (i.e., transmit goes to receive, receive goes to transmit), according to the wiring diagram here:
https://www.manualslib.com/manual/141943/Roland-Jv-1010.html?page=90
Whether this is the same as a normal Apple serial cable I have no idea; I can never remember whether those are straight-wired or crossed. Either way, it won't blow anything up if you use it in place of a normal Apple serial cable and it's wrong, it just won't work.