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72 pins connector at the computer
SO DIMM=Small Outline Dual Inline Memory Module
Pin Non-Parity Parity Description
1 VSS VSS Ground
2 DQ0 DQ0 Data 0
3 DQ1 DQ1 Data 1
4 DQ2 DQ2 Data 2
5 DQ3 DQ3 Data 3
6 DQ4 DQ4 Data 4
7 DQ5 DQ5 Data 5
8 DQ6 DQ6 Data 6
9 DQ7 DQ7 Data 7
10 VCC VCC +5 VDC
11 PD1 PD1 Presence Detect 1
12 A0 A0 Address 0
13 A1 A1 Address 1
14 A2 A2 Address 2
15 A3 A3 Address 3
16 A4 A4 Address 4
17 A5 A5 Address 5
18 A6 A6 Address 6
19 A10 A10 Address 10
20 n/c PQ8 Data 8 (Parity 1)
21 DQ9 DQ9 Data 9
22 DQ10 DQ10 Data 10
23 DQ11 DQ11 Data 11
24 DQ12 DQ12 Data 12
25 DQ13 DQ13 Data 13
26 DQ14 DQ14 Data 14
27 DQ15 DQ15 Data 15
28 A7 A7 Address 7
29 A11 A11 Address 11
30 VCC VCC +5 VDC
31 A8 A8 Address 8
32 A9 A9 Address 9
33 /RAS3 RAS3 Row Address Strobe 3
34 /RAS2 RAS2 Row Address Strobe 2
35 DQ16 DQ16 Data 16
36 n/c PQ17 Data 17 (Parity 2)
37 DQ18 DQ18 Data 18
38 DQ19 DQ19 Data 19
39 VSS VSS Ground
40 /CAS0 CAS0 Column Address Strobe 0
41 /CAS2 CAS2 Column Address Strobe 2
42 /CAS3 CAS3 Column Address Strobe 3
43 /CAS1 CAS1 Column Address Strobe 1
44 /RAS0 RAS0 Row Address Strobe 0
45 /RAS1 RAS1 Row Address Strobe 1
46 A12 A12 Address 12
47 /WE WE Read/Write
48 A13 A13 Address 13
49 DQ20 DQ20 Data 20
50 DQ21 DQ21 Data 21
51 DQ22 DQ22 Data 22
52 DQ23 DQ23 Data 23
53 DQ24 DQ24 Data 24
54 DQ25 DQ25 Data 25
55 n/c PQ26 Data 26 (Parity 3)
56 DQ27 DQ27 Data 27
57 DQ28 DQ28 Data 28
58 DQ29 DQ29 Data 29
59 DQ31 DQ31 Data 31
60 DQ30 DQ30 Data 30
61 VCC VCC +5 VDC
62 DQ32 DQ32 Data 32
63 DQ33 DQ33 Data 33
64 DQ34 DQ34 Data 34
65 n/c PQ35 Data 35 (Parity 4)
66 PD2 PD2 Presence Detect 2
67 PD3 PD3 Presence Detect 3
68 PD4 PD4 Presence Detect 4
69 PD5 PD5 Presence Detect 1
70 PD6 PD6 Presence Detect 6
71 PD7 PD7 Presence Detect 7
72 VSS VSS Ground
Pinout status: +2 -0
According to 2 reports in our database (2 positive and 0 negative) the SO DIMM (72 pin) pinout should be correct.

Is this pinout
NO DIY devices
SO DIMM (72 pin) visual pinout:click to enlarge
Source(s) of this and additional information: Various productsheets at IBM Memory Products, from Hardware Book, Mark Brown, Jim Burd
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