We use cookies to personalise content, to analyse our traffic, keep your preferences and improve the site. We also share information about your use of the site with Google, our advertising and analytics partner to serve you relevant ads. We never sell or give your information to any other third parties. You consent to our cookies if you continue to use this website. You can find more information in our Privacy and Cookie Policies.
For Smart Array P400 Controller only. If you install the Battery-backed write cache as an upgrade to a Smart Array P400/256MB Controller, you must also order part 417836-B21 (HP Smart Array P400 24 Inch Battery Cable Kit).