Is it a RAID controller?

No. It is a non-RAID host bus adapter.

Which Dell storage products are named in its compatibility list?

PowerVault models including the MD2412 and ME5012.

Dell

Dell HBA355e External 12Gb SAS Host Bus Adapter, Low Profile/Full Height

Name: Dell HBA355e External 12Gb SAS Host Bus Adapter, Low Profile/Full Height
Brand: Dell
SKU: 405-AAZY

MPN405-AAZY

Also known as CF5N6

The Dell HBA355e External (405-AAZY) is a low-profile or full-height 12Gb SAS host bus adapter with 16 external ports (4 x4) and a PCIe Gen4 interface.

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Dell HBA355e External 12Gb SAS Host Bus Adapter, Low Profile/Full Height

405-AAZY · Refurbished · 1 year warranty

Quantity (units)

Overview

The HBA355e is Dell's external SAS host bus adapter. It has 16 external ports (4 x4) and connects to the host over PCIe Gen4, in low-profile or full-height form. The Dell part number is 405-AAZY.

It supports 12/6/3Gb/s SAS and SATA and lists up to 240 drives, which is the figure to look at if you plan to attach several storage enclosures. There is no RAID and no cache, as this is a non-RAID adapter.

Its compatibility list covers a very wide set of PowerEdge servers and a range of PowerVault storage arrays, including the MD2412 and ME5012. That wide support is useful if you run mixed Dell hardware.

CF5N6 is on record as an alternative part number. The HBA355e is available new, refurbished or used. New and refurbished units carry a warranty of 1 year or 3 years, and used units carry 90 days.

Specifications

Dell 405-AAZY specifications
Manufacturer part number	405-AAZY
Brand	Dell
Form factor	PCIe adapter, low profile/full height (external ports)
Ports	16 (4 x4 external)
Cache	0 GB
Interface	12/6/3Gb/s SAS/SATA
Maximum drives	240
RAID levels	None (non-RAID HBA)
Component type	Host bus adapter
Host interface	PCIe Gen4
Controller model	HBA355e Adapter
Compatible systems	Listed by Dell for PowerEdge C6420, HS5620, R240, R260, R340, R360, R440, R450, R540, R550, R650, R650xs, R660, R660xs, R6615, R6625, R750, R750xa, R750xs, R760, R760xd2, R760xs, R7615, R7625, R860, R960, T140, T360, T560, XR11, XR12, XR5610; PowerVault MD2412, MD2424, MD2460, ME5012, ME5024, ME5084, ME512, ME5212, ME5224, ME524, ME5284, ME584

Specifications from the manufacturer's datasheet ↗

Alternative part numbers

Other numbers for 405-AAZY, as printed on labels, spare-parts lists and manufacturer documents. Search works with any of them.

Alternative part numbers for 405-AAZY
Part number	Type	Brand	Note
CF5N6	Alternative	Same brand	Dell manufacturer part number shown on Dell's product pageQuote this part number

Compatibility

The manufacturer lists this part for:

Listed by Dell for PowerEdge C6420, HS5620, R240, R260, R340, R360, R440, R450, R540, R550, R650, R650xs, R660, R660xs, R6615, R6625, R750, R750xa, R750xs, R760, R760xd2, R760xs, R7615, R7625, R860, R960, T140, T360, T560, XR11, XR12, XR5610; PowerVault MD2412, MD2424, MD2460, ME5012, ME5024, ME5084, ME512, ME5212, ME5224, ME524, ME5284, ME584

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FAQ

How many drives can the HBA355e External connect?: Up to 240 drives.
Does 405-AAZY have internal or external ports?: External, 16 ports (4 x4).
Is it a RAID controller?: No. It is a non-RAID host bus adapter.
Which Dell storage products are named in its compatibility list?: PowerVault models including the MD2412 and ME5012.