IBM 5280 User's Setup Procedures page 15

You will be connecting one or two more cables to the 5281. The cables are:
• One data station cable
• One diskette drive cable (optional)
Note: The cables do not carry high voltage. There is no danger of electrical
shock.
Each cable connector is color coded. The data station cable connector is color
coded green. The diskette drive cable is color coded yellow.
Green or Yellow Label
User's Setup Procedures 9