Radio Shack TRS-80 Model III Operation Manual page 20

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MODEL II OPERATION

Adding Disk Drives

Each drive you add will increase the on-line storage of your system by 509,184

bytes (roughly equivalent to 300 double-spaced typewritten pages).

Connection of additional Disk Drives is quite simple. The connector is on the

back of the Display console, and a connector cable will be supplied with the

Disk Expansion Unit.

Note:

When the Disk Expansion Unit is

not

connected to the Model II, a

special terminator

must

be connected to the Disk Expansion connector on the

back of the Display Console. This terminator is included with the Computer;

connect it to the DISK EXPANSION jack.

Further instructions are provided with the Expansion Unit, and can be added

at the end of this Operation Manual.

Figure 8. Disk Expansion Unit with three additional Disk Drives.

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