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Pin Signal Pin Signal Pin Signal Pin Signal
1 N.C. 21 Printer Data 0 41 N.C. 61 CTS
2 N.C. 22 Printer Data 1 42 N.C. 62 DCD
3 Kb Clk 1 23 Printer Data 2 43 Switch A 63 DSR
4 Joystick Data A 24 Printer Data 3 44 Switch B 64 TXD
5 Kb Data 1 25 Printer Data 4 45 Switch C 65 RTS
6 Joystick Data B 26 Printer Data 5 46 Switch D 66 N.C.
7 Kb Clk 2 27 Printer Data 6 47 N.C. 67 Detect
8 Joystick Data C 28 Printer Data 7 48 MIDI In 68 N.C.
9 Kb Data 2 29 USB 0 - 49 MIDI Out 69 V. Sync
10 Joystick Data D 30 USB 0 + 50 +5V 70 Ground
11 Lp Select In 31 USB 1 - 51 +5V 71 H. Sync
12 Lp Paper End 32 USB 1+ 52 N.C. 72 Ground
13 Lp Initialize 33 Adapter In 53 N.C. 73 Blue
14 Lp Busy 34 Adapter In 54 N.C. 74 Ground
15 Lp Error 35 Adapter In 55 N.C. 75 Green
16 Lp Ack 36 Adapter In 56 Dock ID - 76 Ground
17 Lp Auto Feed 37 Adapter In 57 RXD 77 Red
18 Lp Strobe 38 Adapter In 58 Lp Select 78 Ground
19 DDC2BC 39 N.C. 59 RI 79 N.C.
20 DDC2BD 40 N.C. 60 DTR 80 N.C.
Modem
Connector Pin Signal
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...1600%20SERIES%201650%20and%201655/connec1.html (4 of 5)6/27/2004 2:52:29 AM