HP A4856-69101 - PCI card cage assembly - Includes 12-slot I/O chassis, I/O board, I/O power board, and I/O backplane Retail
HP A4856AX - PCI card cage assembly 3.3/5.0V - Includes 12-slot I/O chassis, I/O board, I/O power board, and I/O backplane Retail
HP P3505-63020 - I/O card retainer - Metal bracket that secures the I/O card and I/O slot filler panels Retail