Installing Main Memory Modules

•The four memory banks (A, B, C, D) may be filled in any order (with the exception that Bank A must always be filled).

•Memory can be upgraded in increments of 32 MB, 64 MB or 128 MB (by installing pairs of 16 MB, 32 MB or 64 MB modules).

•Always install a pair of identical modules.

•HP does not support models in which the user has installed non-HP memory modules.

	Initial Configuration				Example Upgrade Paths

	D2				Models that are supplied with 64 MB of
	D2				Models that are supplied with 64 MB of
	D1				main memory have a pair of 32 MB, 60 ns,
	D1				fast page mode (FPM), 72-bit, error
					fast page mode (FPM), 72-bit, error
	C2				correcting code (ECC) memory modules.
	C2				correcting code (ECC) memory modules.
	C1				This can be extended to 448 MB by installing
	C1				a further three pairs of 64 MB memory
					a further three pairs of 64 MB memory
	B2				modules.
	B2				modules.
	B1				This can be further extended to 512 MB by
	B1				removing the original pair of modules, and
					removing the original pair of modules, and
	A2				replacing the with a pair of 64 MB modules.
	A2				replacing the with a pair of 64 MB modules.
	A1
	A1

	D2				Models that are supplied with 128 MB of
	D2				Models that are supplied with 128 MB of
	D1				main memory have two pairs of 32 MB,
	D1				60 ns, fast page mode (FPM), 72-bit, error
					60 ns, fast page mode (FPM), 72-bit, error
	C2				correcting code (ECC) memory modules.
	C2				correcting code (ECC) memory modules.
	C1				This can be extended to 384 MB by installing
	C1				a further two pairs of 64 MB memory
					a further two pairs of 64 MB memory
	B2				modules.
	B2				modules.
	B1				This can be further extended to 512 MB by
	B1				removing the original pairs of modules, and
					removing the original pairs of modules, and
	A2				replacing the with two pairs of 64 MB
	A2				replacing the with two pairs of 64 MB
	A1				modules.
	A1

HP Vectra XW manual Installing Main Memory Modules, Example Upgrade Paths