I/O
Option #	Manufacturing Part #	Description	Previous Part #
4121A [S]	501-5966	Sun Fire Link Assembly	n/a
	375-0093 [F]	cPCI Fire Link Optical Module (Paroli)	n/a
	501-5600 [F]	5.0 V hsPCI Cassette	n/a
	501-5694 [F]	Sun Fire Link I/O Assy w/o WCI ASIC	n/a
	370-4224	10MB SRAM I/O DIMM (2X)	n/a
	501-6086 [F]	3.3V hsPCI Cassette	501-5599 [F]
	501-6303 [F]	Sun Fire Link I/O Assy, without Optical Module	n/a
X4170A [S]	540-4946	Sun Fire Link Switch	n/a
	300-1518 [F]	150W Power Supply	n/a
	370-4393 [F]	Fan Tray	n/a
	501-5637 [F]	System Controller	n/a
	501-5939 [F]	WCIX Module	n/a
	540-5205 [F]	Backplane + AC Harness + AC Module	n/a
X4175A [S]	540-5477	Sun Fire Link Optical Module	n/a
X4175A [S]	375-0093 [F]	cPCI Fire Link Optical Module (Paroli)	n/a
X4180A [S]	537-1022 [F]	Sun Fire Link Optical Cable, 5m	n/a
X4181A [S]	537-1023 [F]	Sun Fire Link Optical Cable, 12m	n/a
X4182A [S]	537-1024 [F]	Sun Fire Link Optical Cable, 20m	n/a
X4575A [S]	501-6030	hsPCI I/O Board with PCI Cassettes	501-6302
	501-5397 [F]	hsPCI Board without PCI Cassettes	n/a
	501-5600 [F]	5.0 V hsPCI Cassette	n/a
	501-6086 [F]	3.3V hsPCI Cassette	501-5599 [F]
X4576A [S]	501-6440	hsPCI+ I/O Board with PCI Cassettes	n/a
	501-5600 [F]	5.0 V hsPCI Cassette	n/a
	501-6082 [F]	hsPCI+ I/O Board without PCI Cassettes	n/a
	501-6086 [F]	3.3V hsPCI Cassette	501-5599 [F]
	501-7282	hsPCI+ I/O Board with PCI Cassettes	n/a
	501-5600 [F]	5.0 V hsPCI Cassette	n/a
	501-6086 [F]	3.3V hsPCI Cassette	501-5599 [F]
	501-7274 ²⁴ ²⁵ [F]	hsPCI+ I/O Board without PCI Cassettes	n/a
X4576A-Z [S]	501-7483	hsPCI+ Assembly, L	n/a
	501-7364 [F]	5.0V hsPCI Cassette, L	n/a
	501-7365 [F]	3.3V hsPCI Cassette, L	n/a
	501-7394 ²⁶ [F]	hsPCI+ I/O Board without PCI Cassettes, L	n/a
X4577A-Z [S]	501-7895	hsPCI-X Assembly, L	n/a
	501-7364 [F]	5.0V hsPCI Cassette, L	n/a
	501-7365 [F]	3.3V hsPCI Cassette, L	n/a
	501-7873 [F]	hsPCI-X I/O Board without Cassettes, L	501-7602
n/a	501-7602	hsPCI-X Assembly	n/a
	501-7357 [F]	hsPCI-X I/O Board without Cassettes	n/a
	501-7364 [F]	5.0V hsPCI Cassette, L	n/a
	501-7365 [F]	3.3V hsPCI Cassette, L	n/a
n/a	501-7874 [F]	hsPCI+ I/O Board without PCI Cassettes, L	n/a

²⁴ 501-7274 requires the following SMS 1.4.1 patches: 117371-07 or higher and 117866-09. SMS 1.5 has integrated support.
²⁵ Described on the packing slip as hsPCI++.
²⁶ 501-7394 requires the following SMS 1.4.1 patches: 117371-07 or higher and 117866-09. SMS 1.5 has integrated support.

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