Internal m.2 sata ssds (256gb)
two drives in the m.2 2280 form factor with different part numbers but the same interface type.
top/right drive: samsung pm871b 256gb m.2 sata ssd
part number: mznln256hajq-000h7
key type: b+m key (two notches along the gold pin edge)
protocol: sata iii (6 gbps)
bottom/left drive: sk hynix sc401 256gb m.2 sata ssd
part number: hfs256g39tnh-73a0a bb
key type: b+m key (two notches along the gold pin edge)
protocol: sata iii
compatibility note: both use the sata protocol, not the faster pcie nvme. before installing either one, make sure your motherboard's m.2 slot explicitly supports m.2 sata drives, because many modern slots only accept nvme.
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