B.1 System Slot J1 Connector
Table 
| Pin | Z | A | B | C | D | E | F | 
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| 25 | GND | +5V | REQ64# | ENUM# | +3.3V | +5V | GND | 
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| 24 | GND | AD[1] | +5V | V(I/O) | AD[0] | ACK64# | GND | 
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| 23 | GND | +3.3V | AD[4] | AD[3] | +5V | AD[2] | GND | 
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| 22 | GND | AD[7] | GND | +3.3V | AD[6] | AD[5] | GND | 
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| 21 | GND | +3.3V | AD[9] | AD[8] | M66EN | C/BE[0]# | GND | 
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| 20 | GND | AD[12] | GND | V(I/O) | AD[11] | AD[10] | GND | 
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| 19 | GND | +3.3V | AD[15] | AD[14] | GND | AD[13] | GND | 
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| 18 | GND | SERR# | GND | +3.3V | PAR | C/BE[1]# | GND | 
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| 17 | GND | +3.3V | SDONE | SBO# | GND | PERR# | GND | 
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| 16 | GND | DEVSEL# | GND | V(I/O) | STOP# | LOCK# | GND | 
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| 15 | GND | +3.3V | FRAME# | IRDY# | BD/SEL# | TRDY# | GND | 
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 | Key Area | 
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| 11 | GND | AD[18] | AD[17] | AD[16] | GND | C/BE[2]# | GND | 
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| 10 | GND | AD[21] | GND | +3.3V | AD[20] | AD[19] | GND | 
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| 9 | GND | C/BE[3]# | N/C | AD[23] | GND | AD[22] | GND | 
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| 8 | GND | AD[26] | GND | V(I/O) | AD[25] | AD[24] | GND | 
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| 7 | GND | AD[30] | AD[29] | AD[28] | GND | AD[27] | GND | 
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| 6 | GND | REQ# | GND | +3.3V | CLK | AD[31] | GND | 
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| 5 | GND | N/C | N/C | RST# | GND | GNT# | GND | 
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| 4 | GND | N/C | Healthy# | V(I/O) | INTP | INTS | GND | 
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| 3 | GND | INTA# | INTB# | INTC# | +5V | INTD# | GND | 
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| 2 | GND | TCK | +5V | TMS | N/C | TDI | GND | 
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| 1 | GND | +5V | TRST# | +12V | +5V | GND | |
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#: Low active
