IBM 865741Y Handbook - Page 119
Parallel Port Connector
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Connecting External Options Parallel Port Connector Parallel ports are used to communicate with printers and other devices, such as some CD-ROM and tape drives. Your server provides one 25-pin, D-shell connector on the back of the server. 13 1 25 14 This parallel port connector conforms to the Institute of Electrical and Electronics Engineers (IEEE) Standard 1284. There are three standard modes of operation: Standard Parallel Port (SSP) Enhanced Parallel Port (EPP) Extended Parallel Port (ECP) Table 4 shows the pin-number assignments for the parallel port connector. The signal names for all three modes are shown. SSP and ECP signal names are the same; EPP signal names that are different are shown in parentheses. Pin Signal Pin Signal 1 -STROBE (-WRITE) 2 Data 0 3 Data 1 4 Data 2 5 Data 3 6 Data 4 7 Data 5 8 Data 6 9 Data 7 10 -ACK 11 BUSY (-WAIT) 12 PE 13 SLCT 14 -AUTO FD (-DSTRB) 15 -ERROR 16 -INIT 17 -SLCT IN (-ASTRB) 18 Ground 19 Ground 20 Ground 21 Ground 22 Ground 23 Ground 24 Ground 25 Ground Table 4. Parallel Port Connector Pin-Number Assignments Chapter 4. Installing Options 101