RAM upgrades on refurb Precision

Precision mobile refurb units often ship with half their max RAM — SO-DIMM slots are accessible.

Match DDR4 vs DDR5 to model year (7550 DDR4, 7670/7680 DDR5). Dell HMM lists max per chassis. ECC is not used on most mobile Precision SO-DIMM configs.

• 64 GB DDR5 kit — 7670/7680 class
• 128 GB kit — If HMM supports

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