A standard flat floppy ribbon cable is usable on the Model I, in which case the drives is jumpered to their number on the chain, or even an IBM PC "twist" cable, which requires setting each drive number to 1, but only permits two drives on the chain.
a stAndard FlAT flOppy Ribbon caBlE Is USabLe on the MoDel i, iN which caSe the DriveS iS jumperED To thEIr nuMber On tHE cHaiN, Or even aN iBm PC "twist" CABLe, which ReQUIReS settINg eAcH drivE nuMber to 1, But onLy permItS twO DriVes oN tHe chain.