491825-001 - 2.5in to 3.5in SFF to LFF Adapter Tray Caddy for ProLiant LFF Bays

The 491825-001 SFF-to-LFF adapter tray lets you install a 2.5-inch SATA or SAS SSD/HDD into a 3.5-inch (LFF) hot-swap bay commonly found in legacy ProLiant systems. It’s a simple, mechanical form-factor conversion so you can use modern 2.5-inch drives in older 3.5-inch drive cages while keeping a clean, secure fit for hot-swap chassis.

Technical Specifications

• Part Number: 491825-001
• Function: 2.5in (SFF) drive to 3.5in (LFF) bay adapter tray
• Supported Drives: 2.5in SATA SSD/HDD, 2.5in SAS SSD/HDD (backplane/controller must support the drive interface)
• Bay Type: 3.5in LFF hot-swap bay (requires a compatible LFF drive carrier / tray system)
• Construction: Metal adapter bracket / tray style carrier
• Use Case: Upgrade legacy 3.5in bays with 2.5in SSDs for faster performance, lower power, or improved reliability
• Notes: This is a physical adapter only (not a SATA↔SAS converter)

Interchangeable / Replacement Part Numbers

• 491825-001

✅ Confirmed Compatibility

Please note that the following list is not exhaustive. Compatibility depends on your system's specific configuration. It's essential to verify compatibility with your system or enclosure manufacturer prior to installation.

✔️ ProLiant DL120: G5
✔️ ProLiant DL140: G2, G3, G3p
✔️ ProLiant DL145: G2
✔️ ProLiant DL160: G5, G5p, G6
✔️ ProLiant DL165: G5, G6
✔️ ProLiant DL180: G5, G6
✔️ ProLiant DL185: G5
✔️ ProLiant DL320: G3, G5
✔️ ProLiant DL360: G4p, G5
✔️ ProLiant DL365: G5, G5p, G6
✔️ ProLiant DL380: G5, G6, G7
✔️ ProLiant DL385: G2, G5, G6
✔️ ProLiant ML110: G3
✔️ ProLiant ML150: G2, G3, G5
✔️ ProLiant ML310: G2
✔️ ProLiant ML350: G4p, G5, G6, G7
✔️ ProLiant ML370: G1, G2, G3

☑️ Key Features

☑️ Converts 2.5in SATA or SAS drives to fit 3.5in LFF hot-swap bays
☑️ Ideal for SSD upgrades in legacy ProLiant systems with 3.5in drive cages
☑️ Secure mounting to reduce vibration and improve drive stability
☑️ Helps standardize on 2.5in SSD inventory while keeping older servers in service
☑️ Physical form-factor conversion only (keeps your existing backplane and cabling layout)

⚙️ Fit Notes

• This adapter is designed for 3.5in LFF hot-swap environments and typically requires the correct 3.5in tray/caddy style used by your chassis.
• SATA vs SAS support depends on your server backplane and controller (a SAS drive will not function in a SATA-only backplane/controller setup).
• If your system uses a different LFF tray/caddy generation or latch style, verify physical fitment before ordering.