Chapter 1 “An overview of the IBM 4685-K03 POS Keyboard”
This chapter provides an overview of the IBM 4685-K03 POS Keyboard, explains how to
confirm the identification of the product, gives the names of the parts, and describes the key
layout at time of shipment.
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An overview

The IBM 4685-K03 POS keyboard is equipped with an MSR (Magnetic Stripe Reader). The
4685-K03 keyboard is to be connected to an IBM 4800 POS terminal. This keyboard
connects using the IBM RS-485 or powered USB, but using both interfaces at the same
time is not supported.
Connecting two different interface cables at the same time may
damage the keyboard.
The primary hardware configuration for the 4685-K03 is as follows:
4685-K03
Key matrix 12 rows × 7 columns
At shipment Single keys
Double keys
54 pieces
4 pieces
MSR Read only
Mode key 4 positions
Interfaces RS-485, Powered USB
Chapter1 Outline for 4685-K03 POS Keyboard 1