Cables depend upon which CPU you go with.

The 5/01 and 5/02 CPU's only have 1 comm port - an RJ45 connector that is DH-485 protocol. If your PC has a serial port, you would use the 1747-PIC; if all you have are USB ports, use 1747-UIC with a 1747-C13 cable.

The 5/03 CPU also has the RJ-45 port for DH-485, so the cables mentioned above will work. The 5/03 also has a DB-9 serial port, that is default configured for RS-232 DF1 - a 1747-CP3 or any null-modem serial cable will work for this port.

The 5/04 CPU has a DH+ port, as well as the DB-9 port like the 5/03. For the DB-9, see the cable recommendations above; for DH+ you will need either a 1784-PCMK card for your laptop or a 1784-U2DHP USB to DH+ converter cable.

Finally, the 5/05 CPU has ports identical to the 5/03 (RJ-45 and a DB-9), but the RJ-45 port on the 5/05 is ethernet. For the ethernet port, use a CAT 5 crossover cable or a regular CAT 5 patch cable if you are using an ethernet switch or hub. The serial port uses the same cables as the 5/03 and 5/04.