https://www.techpowerup.com/237582/a...x16-riser-card
ASUS rolled out the Hyper M.2 x16 riser card, an accessory which could prove useful for those who want to add up to four extra M.2 SSDs. The card features a PCI-Express 3.0 x16 upstream interface, which it splits into four 32 Gb/s M.2-22110 slots (up to 110 mm length), with PCI-Express 3.0 x4 wiring, each. The card doesn't have any serious HBA logic of its own, beyond simple circuitry to power the four M.2 drives, and put out power/activity status LEDs for each slot.
A monolithic, stylish brushed aluminium shroud doubles up as a heatsink for the M.2 drives. There's also a lateral-blower fan, which guides air from inside your case through the drives and outside through the perforated rear bracket. You can turn this fan off with a physical switch on the card, although there's no software-based fan-control. The card is 20.2 cm long, 9.6 cm tall, and 1-slot thick. The company is advertising the card to be compatible only with its X299 chipset-based motherboards, for now. The company didn't reveal pricing.
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