IBM 392, 387, 393, 391, 389, 388, 441, 390 manual System board components

Figure 27. System board components

	Power Management Bus (PMBus) connector		Internal USB 2.0 Type A connector
1		20
	TPM connector		Internal dual-port USB 2.0 connector 2
2		21
	Memory slot 4 (DIMMB2)		Internal dual-port USB 2.0 connector 1
3		22
	Memory slot 3 (DIMMB1)		System board battery
4		23
	Memory slot 2 (DIMMA2)		Front panel connector
5		24
	Memory slot 1 (DIMMA1)		System board jumper blocks
6		25
	iButton socket		SATA SGPIO connector
7		26
	Main power connector		Hard disk drive LED connector
8		27
	5-pin system fan 2 connector		DIT module connector
9		28
	Microprocessor		Internal serial connector
10		29
	Intel C202 chip		PCI card slot (PCI slot 1)
11		30
	4-pin system fan 1 connector		PCI Express x4 card slot (PCI-E slot 2)
12		31
	SATA connector 1		BMC chip
13		32
	SATA connector 0		PCI Express x8 card slot (PCI-E slot 3)
14		33
	SATA connector 3		PCI Express x8 card slot (PCI-E slot 4)
15		34
	SATA connector 2		Microprocessor fan connector
16		35
	SATA connector 5		System fan 3 connector
17		36
	SATA connector 4		Microprocessor power connector
18		37
	iKVM key connector
19

Chapter 3. Product overview 43