AsRock M2U2-HD M.2 2242-to-Mini-SAS HD Riser Adapter

Overview

The AsRock M2U2-HD is a compact riser card that adapts an M.2 2242 form-factor SSD to a Mini-SAS HD interface, built for rack server backplanes that expect Mini-SAS HD connectivity rather than a direct M.2 slot. At roughly 1.65 x 0.87 in and 0.02 lb, it is a minimal-footprint board meant to sit close to the drive bay rather than occupy expansion slot space. The M2U2-HD is factory-new and sourced through channel-direct distribution — no grey-market or parallel-import stock.

Key Features

• M.2 2242 Form Factor Support: Matches the compact 22mm x 42mm M.2 module length used in many server boot-drive and cache-drive configurations, so you're not stuck sourcing a longer M.2 stick to fit rack hardware designed around this footprint.
• Mini-SAS HD Interface: Converts the M.2 edge connector to Mini-SAS HD, letting you connect an M.2 SSD into a backplane or controller expecting Mini-SAS HD cabling instead of native M.2 or U.2 wiring — useful when standardizing drive connectivity across a mixed-server rack.
• Low Profile, Low Weight: At 0.02 lb and under 1.7 in on its longest edge, the card adds negligible mass and clearance burden inside a populated 1U or 2U chassis where cable routing and airflow room are already tight.
• Vietnam-Manufactured: Country of origin is Vietnam — relevant for buyers tracking supply chain origin on procurement paperwork or NDAA-adjacent sourcing reviews.

Integration & Compatibility

Because the M2U2-HD bridges M.2 2242 to Mini-SAS HD, confirm your server backplane or HBA actually terminates in Mini-SAS HD before ordering — this card does not convert to SATA or U.2 connectors. It's a fit for rack server builds already standardized on Mini-SAS HD for drive connectivity where an M.2 2242 SSD needs to join that cabling scheme. Search variation: M2U2-HD is also referenced as M2U2 HD.

Eden Phillips

The M2U2-HD is a narrow-purpose part: M.2 2242 in, Mini-SAS HD out. If you're racking servers that standardized on Mini-SAS HD backplanes and need to drop in an M.2 2242 drive, this is the adapter that makes the two speak the same cabling language.

Technical Highlights:

• M.2 2242 Interface: Sized specifically for 22mm x 42mm M.2 modules — don't try to force a longer 2280 stick onto this card.
• Mini-SAS HD Output: Targets backplanes and HBAs wired for Mini-SAS HD, not SATA or U.2 — check your chassis cabling before ordering.
• 0.02 lb / 1.65 x 0.87 in footprint: Small enough to tuck near a drive bay without eating into cable management space in a dense 1U build.

Deployment Considerations:

• Verify your HBA or backplane terminates in Mini-SAS HD — this card is not a universal M.2 adapter.
• Confirm the target SSD is specifically 2242 length; other M.2 lengths (2260, 2280) won't seat correctly.

A fit for rack integrators standardizing drive connectivity on Mini-SAS HD who need to add M.2 2242 SSD capacity without rewiring the backplane.