System Board
Option #	Manufacturing Part #	Description	Previous Part #
SELX4001Z Price	M4000 Motherboard Upgrade to SPARC64 VII+ 2.66GHz
	541-4359 [F]	Motherboard Cage (MOBO2/MBU_A_2) includes motherboard 511-1600	n/a
	300-2009 ¹³ [F]	1.2V DC-DC Converter, DDC_A,	n/a
	300-2010 ¹⁴ [F]	3.3V DC-DC Converter, DDC_B,	n/a
n/a	541-0893 [F]	Motherboard Cage (TMOBO/MBU_A) includes motherboard 501-7676,	n/a
	300-2009 ¹¹ [F]	1.2V DC-DC Converter, DDC_A,	n/a
	300-2010 ¹² [F]	3.3V DC-DC Converter, DDC_B,	n/a

¹¹ DDC_A may be used on IOU or MBU_A as a replacement FRU.
¹² DDC_B may be used on IOU or MBU_A as a replacement FRU.
¹³ DDC_A may be used on IOU or MBU_A as a replacement FRU.
¹⁴ DDC_B may be used on IOU or MBU_A as a replacement FRU.

Table Legend
[F] = Field Replaceable Unit (FRU) [C] = Customer Replaceable Unit (CRU) [S] = Supported, but can no longer be ordered with this system [N] = No longer supported for this system Price = Price this Part