Dell 7HYY4 BOSS-S1 Boot Optimized Storage Solution, PCIe adapter card for up to 2x M.2 SATA SSDs.
This card is designed to separate the boot disk from the main data storage: it allows using one or two M.2 SATA SSDs as a boot volume, freeing the server’s front slots for data drives, main RAID or application storage.
Used, tested and working, pulled from professional server stock. Sold as pictured: BOSS-S1 7HYY4 card only, M.2 SSDs not included.
Main specifications:
– Dell P/N: 7HYY4
– Type: Dell BOSS-S1 / Boot Optimized Storage Solution
– Card interface: PCIe
– Drive support: up to 2x M.2 SATA 6Gb/s SSDs
– Typical use: boot disk / RAID 1 boot / OS drive
– SSDs included: no
We also stock other Dell BOSS-S1 cards: 7HYY4, JV70F, M7W47, 3JT49-LP (low profile bracket).
Important SATA/NVMe note: BOSS-S1 supports M.2 SATA 6Gb/s drives only. This is not an NVMe card. If you need NVMe, verify a different compatible card for your system.
Always verify compatibility with your server/workstation model, BIOS/UEFI, firmware, bracket height and Dell official spare parts list.








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