via the description:
"Roland SBX-80 Sync Box as well as a Roland MSQ-700. Terrific vintage relics from our musical past. The Sync Box offers many options for sending and receiving different beat sources. I purchased this piece originally to (DIN)sync a TR-808 and/or Roland CR-8000 Drum machines with a tap tempo. This also works well to tap tempo for arpeggiators inputs on any period synth (Jupiter 4, 6, 8, Juno-60, Korg Mono/Poly etc...). I am including a DIN/SYNC cable with this particular piece (looks like a MIDI cable but pin-configured differently). Also included is a Roland MSQ-700."