Processor sockets
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486socket: 168pins. 5V. 486SX, 486DX
socket1:   169pins. 5V. OverDrive 486SXODP, OverDrive 486DXODP
socket2:   238pins. 5V. 486SX, 486DX, 486DX2, 486DX4 OverDrive,
           - Pentium OverDrive
socket3:   237pins. 3.3/5V. 486SX, 486DX, 486DX2, 486DX4,
           - Pentium OverDrive, 5x86
socket4:   273pins. 5V. Pentium 60-66, Pentium OverDrive
socket5:   320pins. 3.3V. Pentium 75-133 MHz, Pentium OverDrive
socket7:   321pins. 2.5-3.3V. Pentium 75-200 MHz,
           - Pentium OverDrive, Pentium MMX,
           - Pentium MMX OverDrive, K5, 6x86, K6, 6x86MX
socket8:   387pins. 3.1/3.3V. Pentium Pro,
           - Pentium Pro OverDrive, Pentium II OverDrive
socket370: 370pins. Celeron
slot1:     242leads. 2.8-3.3V. Pentium II/III, Celeron,
           - Pentium Pro (with Socket 8 on daughtercard)
slot2:     330leads. Pentium III, Xeon