We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Refurbished HP 512MB Smart Array BBWC upgrade kit, circuit board with battery module

HP Refurbished

HP 405148-B21 512MB Smart Array BBWC Upgrade Kit server accessory

SKU CH-Q4VA-HH2PY MPN 405148-B21

Adds 512 MB of battery-backed write cache to Smart Array P400 controllers

  • Product typeBuffer 22801
  • 512 MB cache accelerates write performance on Smart Array P400
  • Battery-backed design protects cached data during power loss
  • DRAM-based buffer reduces I/O latency for critical workloads
  • System-specific upgrade installs directly into compatible controller slot

Smart Array BBWC Upgrade Kit

This HP 405148-B21 kit adds 512MB of battery-backed write cache to a Smart Array P400 controller. The DRAM module plugs into the dedicated slot on the card to accelerate write performance and protect data during power loss. It is a system-specific upgrade designed for that controller family.

For P400 cache expansion

The kit suits administrators upgrading a Smart Array P400 that currently lacks write-cache memory. Buyers needing a different capacity, a different controller interface, or a battery module included in the package should look elsewhere. The item is sold in refurbished condition.

How it compares

Measured against everything we stock in Drive Cages & Server Add-Ons, at today’s prices. Recalculated every night.

Price $53.99
Cheaper than about 60% of the 1,119 comparable items (median $74.99).

New to this? Buying server hardware with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameHP
Model name405148-B21
Product typeBuffer 22801
Size & build
Shipping weight0.91 kg
Package size152 × 152 × 76 mm

Questions about this item

How much power does the 512MB BBWC upgrade kit draw when the Smart Array P400 runs continuously?

The kit contains only a 512MB DRAM module and a battery; it has no separate power rating and draws negligible current from the controller itself.

Which controller and slot must already be present in the server for this 405148-B21 kit to function?

A Smart Array P400 controller with its dedicated BBWC connector and one free compatible memory slot are required for installation.

More in Drive Cages & Server Add-Ons

Similar items