Pinouts >  Memory slots and cards connectors
30 pin SIMM connector layout
30 pin SIMM connector
at the computer
SIMM=Single Inline Memory Module
Pin Name Description
1VCC+5 VDC
2/CASColumn Address Strobe
3DQ0Data 0
4A0Address 0
5A1Address 1
6DQ1Data 1
7A2Address 2
8A3Address 3
9GNDGround
10DQ2Data 2
11A4Address 4
12A5Address 5
13DQ3Data 3
14A6Address 6
15A7Address 7
16DQ4Data 4
17A8Address 8
18A9Address 9
19A10Address 10
20DQ5Data 5
21/WEWrite Enable
22GNDGround
23DQ6Data 6
24A11Address 11
25DQ7Data 7
26QPData Parity Out
27/RASRow Address Strobe
28/CASPCAS Parity
29DPData Parity In
30VCC+5 VDC
According to 3 reports in our database (3 positive and 0 negative) this pinout should be correct.

Is this pinout
SIMM (30 pin) visual pinout:click to enlarge
Source(s) of this and additional information: comp.sys.ibm.pc.hardware.* FAQ Part 4, maintained by Ralph Valentino, from J. Ogren and Helfried Behre, comp.sys.ibm.pc.hardware.* FAQ Part 4, maintained by Ralph Valentino
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