Does the nvme m.2 ssd to pcie x16/x8/x4 card support 4.0 speeds, or 3.0 only?

Everyone is falling over themselves to give you the wrong answer. Two of these comments are referring to the hero vii and not the hero viii which the dark hero OP has is based on. His board has 3 x16 slots, the top 2 to the CPU can either be configured for a single slot at 16 lanes, or x8 on both. The CPU only has 24 lanes total, and 4 go to the chipset 4 to the m.2 slot1. Chipset works like a switch providing 16 more lanes are higher latency The 3rd slot is x4 wired pcie 4.0 to the chipset. So yes, he should be capable of 4.0 speeds if this adapter supported it. That he can't suggests he either used too many of the 16 lanes his chipset provides or this card can't provide 4.0 passthrough.

In re: to the sabrent nvme m.2 ssd to pcie x16/x8/x4 card with aluminum heat sink. why does paperwork that comes with the card says for x16 slot only?

The physical form factor is for a 16x "slot" with the retaining tab/clip. This should provide adequate physical support since it does not use a bracket for the card slot. Depending on the mainboard/motherboard, Installing it in an 8x or 4x slot connector may not align properly or provide sufficient support. Not all physical 16x slots are actually wired to support sixteen (16) PCIe lanes. The same is true of smaller slots. To get the full performance, the slot must support or be "wired" for at least four (4) logical lanes. For instance I have it installed in a physical 16x slot that is only "wired" for four (4) lanes, which in this case happens to be the perfectly matched scenario.

Does this device require pcie lane bifurcation on the motherboard, or is it handled on the card itself?

That is handled by the card itself. It has an ASMedia PCIe switch built in for broad compatibility.

With all slots populated, do the drives run at pcie 3.0 x1 speeds?

Each drive can be independently accessed with up to PCIe 3.0 x2 lanes per M.2 slot.

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🚀 Upgrade your storage game with cool, fast, and flawless PCIe power!

PLUG PLAY READY - All screws and screwdriver included for hassle-free, professional installation.
BLAZING PC IE X 4 SPEED - Unlock ultra-fast NVMe SSD performance with PCIe x16/x8/x4 compatibility.
COOL QUIET OPERATION - Aluminum heatsink with thermal pad keeps your SSD running cool under pressure.
FUTURE PROOF YOUR SETUP - Designed for NVMe M-Key SSDs, ensuring next-gen storage speeds without compromise.
UNIVERSAL M 2 SIZE SUPPORT - Fits 2230, 2242, 2260, and 2280 SSDs for ultimate flexibility.

The Sabrent NVMe M.2 SSD to PCIe x16/x8/x4 adapter card (EC-PCIE) enables ultra-fast NVMe SSDs to leverage PCIe x4 lanes for superior transfer speeds. Compatible with multiple M.2 sizes (2230 to 2280) and featuring an aluminum heatsink with thermal pad, it ensures efficient cooling during heavy workloads. Designed for professional-grade installations, it includes all necessary screws and a screwdriver, making it a plug-and-play solution for Windows 7 and 8 systems. Note: Only supports M-Key NVMe SSDs and requires PCIe x4 or higher slots.

规格

Brand	SABRENT
Manufacturer	Sabrent, Sabrent, 405 Science Drive Moorpark, California, 93021, United States, Any support in India Please visit this www.blackrstore.com and contect to this mail id- [email protected]
Series	EC-PCIE
Colour	M.2 PCIe Card + Heatsink
Item Height	0.5 Inches
Item Width	2 Inches
Product Dimensions	10.16 x 5.08 x 1.27 cm; 80 g
Item model number	EC-PCIE
Graphics Card Interface	PCI-Express x16
Hardware Platform	Sata
Operating System	Windows 7, Windows 8
Are Batteries Included	No
Included Components	NVMeM.2 SSD To PCIe x16/x8/x4 Card (SSD is NOT included). • Heatsink with thermal pad. • All necessary screws.
Manufacturer	Sabrent
Country of Origin	USA
Item Weight	80 g