PCIe 4.0 Card Hosts 21 M.2 SSDs: Up To 168TB, 31 GB/s

[Important before purchase] The motherboard must support PCIe split(Bifurcation) function and be able to set PCIe X4X4X4X4 or 4X4 mode; the

KONYEAD pcie4.0 x16 to m.2 m-Key nvme x 4 ssd Expansion Card with Heatsink，Supports 4 NVMe M.2 2280 up to 256Gbps，M2 Adapter Card 2280 Driver Free.

Sonnet M.2 4x4 PCIe Card for SSDs - Sonnet

PCI-E 4.0 4 x4 to M.2 NVMe 4-Bays Expansion Card for M.2 NVMe Solid State Drive SSD PCIe X16 4.0 Gen4 4-Disk Split Adapter Cards - AliExpress

ASUS Hyper M.2 X16 PCIe 3.0 X4 Expansion Card V2 Supports 4 NVMe M.2 (2242/2260/2280/22110) Upto 128 Gbps for Intel VROC and AMD Ryzen Threadripper NVMe Raid : Electronics

ASUS Hyper M.2 X16 PCIe 4.0 X4 Expansion Card Supports 4 NVMe M. 2 (2242/2260/2280/22110) up to 256Gbps for AMD 3rd Ryzen sTRX40, AM4 Socket and Intel VROC NVMe Raid : Electronics

1) Dual M.2 PCIe NVMe Adapter without PCIe Splitter Function 2) Soft RAID Configuration in Windows or Linux (Intel and AMD Platform) 3) Not support

Dual Slot M.2 NVMe PCIe 4.0 X8 Adapter Card with ASM 1182E Chip, Only Work with PCIe Splitter Function Motherboard

PCI-E 4.0 4 x4 to M.2 NVMe 4-Bays Expansion Card for M.2 NVMe Solid State Drive SSD PCIe X16 4.0 Gen4 4-Disk Split Adapter Cards - AliExpress

JMT PCIe 4.0 16x to 4X M.2 NVME SSD Adapter Card PCIe 4.0 GEN4 Full Speed Bifurcation Four-Bay Board Expansion Card 1 to 4 M.2 NVMe SSD Adapter Support 2242 2260 2280 22110 (No Heatsink) : Electronics

NeweggBusiness - Dual M.2 PCIe Adapter, M2 SSD NVME (m key) or SATA (b key) 22110 2280 2260 2242 2230 to PCI-e 3.0 x4 Host Controller Expansion Card with Low Profile Bracket for Desktop PCI Express Slot

Gegong 4 Port NVMe to PCI-E Host Controller Expansion Card, Support 2230 2242 2260 2280?m.2 NVMe to PCIe x16 Adapter, M Key H

You know what I really cant understand my dudes (and plz give me leeway, im only a weekender nerd) if we can put 512gb on a single chip and more, whats preventing